| Message ID | 20240603211538.289765-1-andriy.shevchenko@linux.intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v1,1/1] treewide: Align match_string() with sysfs_match_string() | expand |
On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. Looks nice, thanks for doing this. > diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c > index ac6293c24976..2d317c7e1cea 100644 > --- a/drivers/pci/pcie/aer.c > +++ b/drivers/pci/pcie/aer.c > @@ -210,7 +210,7 @@ void pcie_ecrc_get_policy(char *str) > { > int i; > > - i = match_string(ecrc_policy_str, ARRAY_SIZE(ecrc_policy_str), str); > + i = match_string(ecrc_policy_str, str); > if (i < 0) > return; > Acked-by: Bjorn Helgaas <bhelgaas@google.com> # drivers/pci/ > +++ b/mm/vmpressure.c > @@ -388,7 +388,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > > /* Find required level */ > token = strsep(&spec, ","); > - ret = match_string(vmpressure_str_levels, VMPRESSURE_NUM_LEVELS, token); > + ret = match_string(vmpressure_str_levels, token); VMPRESSURE_NUM_LEVELS looks like it's no longer used? > if (ret < 0) > goto out; > level = ret; > @@ -396,7 +396,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > /* Find optional mode */ > token = strsep(&spec, ","); > if (token) { > - ret = match_string(vmpressure_str_modes, VMPRESSURE_NUM_MODES, token); > + ret = match_string(vmpressure_str_modes, token); Ditto. > if (ret < 0) > goto out; > mode = ret;
On 6/3/24 00:57, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- [...] > diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c > index bdccd1ba1524..8134f9290791 100644 > --- a/drivers/ata/pata_hpt366.c > +++ b/drivers/ata/pata_hpt366.c > @@ -178,7 +178,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", modestr, list[i]); > return 1; > diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c > index c0329cf01135..2d0b659bbd65 100644 > --- a/drivers/ata/pata_hpt37x.c > +++ b/drivers/ata/pata_hpt37x.c > @@ -226,7 +226,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", > modestr, list[i]); Looks good to me. Acked-by: Damien Le Moal <dlemoal@kernel.org> # drivers/ata/
在 2024/6/2 23:57, Andy Shevchenko 写道: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- > > Compile tested with `make allyesconfig` and `make allmodconfig` > on x86_64, arm, aarch64, powerpc64 (8 builds total). > [...] > diff --git a/fs/ubifs/auth.c b/fs/ubifs/auth.c > index a4a0158f712d..fc0da18bfa65 100644 > --- a/fs/ubifs/auth.c > +++ b/fs/ubifs/auth.c > @@ -264,13 +264,13 @@ int ubifs_init_authentication(struct ubifs_info *c) > return -EINVAL; > } > > - c->auth_hash_algo = match_string(hash_algo_name, HASH_ALGO__LAST, > - c->auth_hash_name); > - if ((int)c->auth_hash_algo < 0) { > + err = __match_string(hash_algo_name, HASH_ALGO__LAST, c->auth_hash_name); > + if (err < 0) { > ubifs_err(c, "Unknown hash algo %s specified", > c->auth_hash_name); > - return -EINVAL; > + return err; > } > + c->auth_hash_algo = err; > > snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", > c->auth_hash_name); Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com> # fs/ubifs
On 6/2/24 17:57, Andy Shevchenko wrote: > diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c > index a8e28f9b9271..7bed499effd3 100644 > --- a/kernel/trace/trace_osnoise.c > +++ b/kernel/trace/trace_osnoise.c > @@ -2230,9 +2230,9 @@ static ssize_t osnoise_options_write(struct file *filp, const char __user *ubuf, > enable = false; > } > > - option = match_string(osnoise_options_str, OSN_MAX, option_str); > + option = match_string(osnoise_options_str, option_str); > if (option < 0) > - return -EINVAL; > + return option; > > /* > * trace_types_lock is taken to avoid concurrency on start/stop. Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org> Thanks! -- Daniel
Am Sonntag, 2. Juni 2024, 17:57:12 CEST schrieb Andy Shevchenko: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- > > Compile tested with `make allyesconfig` and `make allmodconfig` > on x86_64, arm, aarch64, powerpc64 (8 builds total). > > I guess the best is to apply it to Linus' tree directly. > And now it seems a good timing as there are no new users > of this API either in v6.10-rcX, or in Linux Next. > > But if you think differently, tell me. > For the Rockchip clock part > drivers/clk/rockchip/clk.c | 4 +-- [...] > diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c > index 73d2cbdc716b..30414d081f46 100644 > --- a/drivers/clk/rockchip/clk.c > +++ b/drivers/clk/rockchip/clk.c > @@ -266,8 +266,8 @@ static struct clk *rockchip_clk_register_frac_branch( > struct clk *mux_clk; > int ret; > > - frac->mux_frac_idx = match_string(child->parent_names, > - child->num_parents, name); > + frac->mux_frac_idx = __match_string(child->parent_names, > + child->num_parents, name); > frac->mux_ops = &clk_mux_ops; > frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb; > Acked-by: Heiko Stuebner <heiko@sntech.de>
On Sun, 02 Jun 2024, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. Why do we think it's a good idea to increase and normalize the use of double-underscore function names across the kernel, like __match_string() in this case? It should mean "reserved for the implementation, not to be called directly". If it's to be used directly, it should be named accordingly, right? Being in line with __sysfs_match_string() isn't a great argument alone, because this adds three times the number of __match_string() calls than there are __sysfs_match_string() calls. It's not a good model to follow. Arguably both should be renamed. BR, Jani.
On 02-06-24, 18:57, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > .. > drivers/phy/mediatek/phy-mtk-tphy.c | 8 ++--- > drivers/phy/tegra/xusb.c | 4 +-- Acked-by: Vinod Koul <vkoul@kernel.org>
On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> # for I2C
Hi Andy, On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index 503773707e01..9cb350de30f0 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -798,7 +798,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > if (!(info->valid & ACPI_VALID_HID)) > return false; > > - index = match_string(ids, -1, info->hardware_id.string); > + index = __match_string(ids, -1, info->hardware_id.string); > if (index >= 0) > return true; > > @@ -809,7 +809,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > return false; > > for (i = 0; i < cid_list->count; i++) { > - index = match_string(ids, -1, cid_list->ids[i].string); > + index = __match_string(ids, -1, cid_list->ids[i].string); > if (index >= 0) > return true; > } Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> # drivers/acpi
Hi, On 6/2/24 5:57 PM, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- > > Compile tested with `make allyesconfig` and `make allmodconfig` > on x86_64, arm, aarch64, powerpc64 (8 builds total). > > I guess the best is to apply it to Linus' tree directly. > And now it seems a good timing as there are no new users > of this API either in v6.10-rcX, or in Linux Next. > > But if you think differently, tell me. Thanks, the drivers/platform/x86 bits look good to me: Acked-by: Hans de Goede <hdegoede@redhat.com> Regards, Hans > arch/powerpc/xmon/xmon.c | 5 ++-- > arch/x86/kernel/cpu/mtrr/if.c | 4 +-- > crypto/asymmetric_keys/pkcs7_verify.c | 4 +-- > drivers/acpi/scan.c | 4 +-- > drivers/ata/pata_hpt366.c | 2 +- > drivers/ata/pata_hpt37x.c | 2 +- > drivers/base/property.c | 6 ++-- > drivers/char/ipmi/ipmi_msghandler.c | 2 +- > drivers/char/ipmi/ipmi_si_hardcode.c | 2 +- > drivers/clk/bcm/clk-bcm2835.c | 4 +-- > drivers/clk/rockchip/clk.c | 4 +-- > drivers/clk/tegra/clk-tegra124-emc.c | 7 ++--- > drivers/cpufreq/amd-pstate.c | 4 +-- > drivers/cpufreq/intel_pstate.c | 2 +- > .../intel/qat/qat_common/adf_cfg_services.c | 5 ++-- > .../gpu/drm/drm_panel_orientation_quirks.c | 2 +- > drivers/gpu/drm/i915/display/intel_pipe_crc.c | 2 +- > drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 +-- > drivers/gpu/drm/nouveau/dispnv50/crc.c | 2 +- > drivers/hwmon/ltc4282.c | 14 ++++----- > drivers/hwmon/nct6775-platform.c | 6 ++-- > drivers/hwtracing/intel_th/msu.c | 2 +- > drivers/i2c/busses/i2c-i801.c | 4 +-- > drivers/leds/leds-sun50i-a100.c | 2 +- > drivers/mfd/omap-usb-host.c | 2 +- > drivers/mmc/host/sdhci-xenon-phy.c | 13 ++++----- > drivers/mtd/nand/raw/nand_macronix.c | 10 ++----- > .../net/ethernet/chelsio/cxgb4/cudbg_lib.c | 6 ++-- > .../net/wireless/intel/iwlwifi/mvm/debugfs.c | 2 +- > drivers/pci/pcie/aer.c | 2 +- > drivers/phy/mediatek/phy-mtk-tphy.c | 8 ++--- > drivers/phy/tegra/xusb.c | 4 +-- > drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 6 ++-- > drivers/pinctrl/pinmux.c | 6 ++-- > drivers/platform/x86/hp/hp-wmi.c | 29 +++++++------------ > drivers/platform/x86/msi-ec.c | 4 +-- > drivers/power/supply/ab8500_btemp.c | 2 +- > drivers/power/supply/ab8500_chargalg.c | 2 +- > drivers/power/supply/ab8500_charger.c | 2 +- > drivers/power/supply/ab8500_fg.c | 2 +- > drivers/staging/gdm724x/gdm_tty.c | 5 ++-- > .../int340x_thermal/processor_thermal_rfim.c | 4 +-- > .../processor_thermal_wt_req.c | 2 +- > drivers/usb/common/common.c | 8 ++--- > drivers/usb/dwc3/dwc3-rtk.c | 2 +- > drivers/usb/typec/class.c | 14 ++++----- > drivers/usb/typec/tipd/core.c | 3 +- > drivers/video/fbdev/pxafb.c | 4 +-- > fs/bcachefs/compress.c | 2 +- > fs/bcachefs/opts.c | 4 +-- > fs/bcachefs/util.c | 4 +-- > fs/ubifs/auth.c | 8 ++--- > include/linux/string.h | 12 +++++++- > kernel/cgroup/rdma.c | 2 +- > kernel/sched/debug.c | 2 +- > kernel/trace/trace.c | 4 +-- > kernel/trace/trace_osnoise.c | 4 +-- > lib/dynamic_debug.c | 5 ++-- > lib/string_helpers.c | 6 ++-- > mm/mempolicy.c | 4 +-- > mm/vmpressure.c | 4 +-- > security/apparmor/lsm.c | 9 +++--- > security/integrity/ima/ima_main.c | 2 +- > security/integrity/ima/ima_policy.c | 2 +- > sound/firewire/oxfw/oxfw.c | 2 +- > sound/pci/oxygen/oxygen_mixer.c | 2 +- > sound/soc/codecs/max98088.c | 2 +- > sound/soc/codecs/max98095.c | 2 +- > sound/soc/soc-dapm.c | 5 ++-- > 69 files changed, 150 insertions(+), 174 deletions(-) > > diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c > index bd4813bad317..f479cc62674a 100644 > --- a/arch/powerpc/xmon/xmon.c > +++ b/arch/powerpc/xmon/xmon.c > @@ -3478,8 +3478,7 @@ skipbl(void) > return c; > } > > -#define N_PTREGS 44 > -static const char *regnames[N_PTREGS] = { > +static const char *regnames[] = { > "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", > "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", > "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", > @@ -3514,7 +3513,7 @@ scanhex(unsigned long *vp) > regname[i] = c; > } > regname[i] = 0; > - i = match_string(regnames, N_PTREGS, regname); > + i = match_string(regnames, regname); > if (i < 0) { > printf("invalid register name '%%%s'\n", regname); > return 0; > diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c > index a5c506f6da7f..9b749b848123 100644 > --- a/arch/x86/kernel/cpu/mtrr/if.c > +++ b/arch/x86/kernel/cpu/mtrr/if.c > @@ -4,8 +4,8 @@ > #include <linux/uaccess.h> > #include <linux/proc_fs.h> > #include <linux/ctype.h> > -#include <linux/string.h> > #include <linux/slab.h> > +#include <linux/string_helpers.h> > #include <linux/init.h> > > #define LINE_SIZE 80 > @@ -139,7 +139,7 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos) > return -EINVAL; > ptr = skip_spaces(ptr + 5); > > - i = match_string(mtrr_strings, MTRR_NUM_TYPES, ptr); > + i = match_string(mtrr_strings, ptr); > if (i < 0) > return i; > > diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c > index f0d4ff3c20a8..1139d9d1c89a 100644 > --- a/crypto/asymmetric_keys/pkcs7_verify.c > +++ b/crypto/asymmetric_keys/pkcs7_verify.c > @@ -141,8 +141,8 @@ int pkcs7_get_digest(struct pkcs7_message *pkcs7, const u8 **buf, u32 *len, > *buf = sinfo->sig->digest; > *len = sinfo->sig->digest_size; > > - i = match_string(hash_algo_name, HASH_ALGO__LAST, > - sinfo->sig->hash_algo); > + i = __match_string(hash_algo_name, HASH_ALGO__LAST, > + sinfo->sig->hash_algo); > if (i >= 0) > *hash_algo = i; > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index 503773707e01..9cb350de30f0 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -798,7 +798,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > if (!(info->valid & ACPI_VALID_HID)) > return false; > > - index = match_string(ids, -1, info->hardware_id.string); > + index = __match_string(ids, -1, info->hardware_id.string); > if (index >= 0) > return true; > > @@ -809,7 +809,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > return false; > > for (i = 0; i < cid_list->count; i++) { > - index = match_string(ids, -1, cid_list->ids[i].string); > + index = __match_string(ids, -1, cid_list->ids[i].string); > if (index >= 0) > return true; > } > diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c > index bdccd1ba1524..8134f9290791 100644 > --- a/drivers/ata/pata_hpt366.c > +++ b/drivers/ata/pata_hpt366.c > @@ -178,7 +178,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", modestr, list[i]); > return 1; > diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c > index c0329cf01135..2d0b659bbd65 100644 > --- a/drivers/ata/pata_hpt37x.c > +++ b/drivers/ata/pata_hpt37x.c > @@ -226,7 +226,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", > modestr, list[i]); > diff --git a/drivers/base/property.c b/drivers/base/property.c > index 837d77e3af2b..075c9dbd7aa5 100644 > --- a/drivers/base/property.c > +++ b/drivers/base/property.c > @@ -15,7 +15,7 @@ > #include <linux/property.h> > #include <linux/phy.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/types.h> > > struct fwnode_handle *__dev_fwnode(struct device *dev) > @@ -489,7 +489,7 @@ int fwnode_property_match_string(const struct fwnode_handle *fwnode, > if (ret < 0) > goto out_free; > > - ret = match_string(values, nval, string); > + ret = __match_string(values, nval, string); > if (ret < 0) > ret = -ENODATA; > > @@ -526,7 +526,7 @@ int fwnode_property_match_property_string(const struct fwnode_handle *fwnode, > if (ret) > return ret; > > - ret = match_string(array, n, string); > + ret = __match_string(array, n, string); > if (ret < 0) > ret = -ENOENT; > > diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c > index e12b531f5c2f..c7526eb1e963 100644 > --- a/drivers/char/ipmi/ipmi_msghandler.c > +++ b/drivers/char/ipmi/ipmi_msghandler.c > @@ -78,7 +78,7 @@ static int panic_op_write_handler(const char *val, > int e; > > strscpy(valcp, val, sizeof(valcp)); > - e = match_string(ipmi_panic_event_str, -1, strstrip(valcp)); > + e = __match_string(ipmi_panic_event_str, -1, strstrip(valcp)); > if (e < 0) > return e; > > diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c > index 0c92fa3eee88..4d3275374a53 100644 > --- a/drivers/char/ipmi/ipmi_si_hardcode.c > +++ b/drivers/char/ipmi/ipmi_si_hardcode.c > @@ -70,7 +70,7 @@ static void __init ipmi_hardcode_init_one(const char *si_type_str, > if (!si_type_str || !*si_type_str) { > p.type = SI_KCS; > } else { > - t = match_string(si_to_str, -1, si_type_str); > + t = __match_string(si_to_str, -1, si_type_str); > if (t < 0) { > pr_warn("Interface type specified for interface %d, was invalid: %s\n", > i, si_type_str); > diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c > index fb04734afc80..9446422d5fa8 100644 > --- a/drivers/clk/bcm/clk-bcm2835.c > +++ b/drivers/clk/bcm/clk-bcm2835.c > @@ -1447,9 +1447,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman, > for (i = 0; i < clock_data->num_mux_parents; i++) { > parents[i] = clock_data->parents[i]; > > - ret = match_string(cprman_parent_names, > - ARRAY_SIZE(cprman_parent_names), > - parents[i]); > + ret = match_string(cprman_parent_names, parents[i]); > if (ret >= 0) > parents[i] = cprman->real_parent_names[ret]; > } > diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c > index 73d2cbdc716b..30414d081f46 100644 > --- a/drivers/clk/rockchip/clk.c > +++ b/drivers/clk/rockchip/clk.c > @@ -266,8 +266,8 @@ static struct clk *rockchip_clk_register_frac_branch( > struct clk *mux_clk; > int ret; > > - frac->mux_frac_idx = match_string(child->parent_names, > - child->num_parents, name); > + frac->mux_frac_idx = __match_string(child->parent_names, > + child->num_parents, name); > frac->mux_ops = &clk_mux_ops; > frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb; > > diff --git a/drivers/clk/tegra/clk-tegra124-emc.c b/drivers/clk/tegra/clk-tegra124-emc.c > index 2a6db0434281..a2709ed60ee7 100644 > --- a/drivers/clk/tegra/clk-tegra124-emc.c > +++ b/drivers/clk/tegra/clk-tegra124-emc.c > @@ -20,7 +20,7 @@ > #include <linux/of_platform.h> > #include <linux/platform_device.h> > #include <linux/sort.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include <soc/tegra/fuse.h> > > @@ -413,13 +413,12 @@ static int load_one_timing_from_dt(struct tegra_clk_emc *tegra, > } > > timing->parent_index = 0xff; > - i = match_string(emc_parent_clk_names, ARRAY_SIZE(emc_parent_clk_names), > - __clk_get_name(timing->parent)); > + i = match_string(emc_parent_clk_names, __clk_get_name(timing->parent)); > if (i < 0) { > pr_err("timing %pOF: %s is not a valid parent\n", > node, __clk_get_name(timing->parent)); > clk_put(timing->parent); > - return -EINVAL; > + return i; > } > > timing->parent_index = i; > diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c > index 1b7e82a0ad2e..b6f52f44625f 100644 > --- a/drivers/cpufreq/amd-pstate.c > +++ b/drivers/cpufreq/amd-pstate.c > @@ -1117,9 +1117,9 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) > - return -EINVAL; > + return ret; > > mutex_lock(&amd_pstate_limits_lock); > ret = amd_pstate_set_energy_pref_index(cpudata, ret); > diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c > index 4b986c044741..1c2ee10415a2 100644 > --- a/drivers/cpufreq/intel_pstate.c > +++ b/drivers/cpufreq/intel_pstate.c > @@ -832,7 +832,7 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) { > if (!boot_cpu_has(X86_FEATURE_HWP_EPP)) > return ret; > diff --git a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > index 268052294468..4b8c45e8b164 100644 > --- a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > +++ b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > @@ -3,7 +3,7 @@ > > #include <linux/export.h> > #include <linux/pci.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include "adf_cfg.h" > #include "adf_cfg_services.h" > #include "adf_cfg_strings.h" > @@ -35,8 +35,7 @@ int adf_get_service_enabled(struct adf_accel_dev *accel_dev) > return ret; > } > > - ret = match_string(adf_cfg_services, ARRAY_SIZE(adf_cfg_services), > - services); > + ret = match_string(adf_cfg_services, services); > if (ret < 0) > dev_err(&GET_DEV(accel_dev), > "Invalid value of " ADF_SERVICES_ENABLED " param: %s\n", > diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c > index aa93129c3397..624743caac4c 100644 > --- a/drivers/gpu/drm/drm_panel_orientation_quirks.c > +++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c > @@ -481,7 +481,7 @@ int drm_get_panel_orientation_quirk(int width, int height) > if (!bios_date) > continue; > > - i = match_string(data->bios_dates, -1, bios_date); > + i = __match_string(data->bios_dates, -1, bios_date); > if (i >= 0) > return data->orientation; > } > diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c > index 5a468ed6e26c..f9e7c66fd538 100644 > --- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c > +++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c > @@ -426,7 +426,7 @@ display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s) > return 0; > } > > - i = match_string(pipe_crc_sources, ARRAY_SIZE(pipe_crc_sources), buf); > + i = match_string(pipe_crc_sources, buf); > if (i < 0) > return i; > > diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > index 670c9739e5e1..7fb9f5345654 100644 > --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > @@ -645,8 +645,8 @@ static int nv17_tv_create_resources(struct drm_encoder *encoder, > int i; > > if (nouveau_tv_norm) { > - i = match_string(nv17_tv_norm_names, num_tv_norms, > - nouveau_tv_norm); > + i = __match_string(nv17_tv_norm_names, num_tv_norms, > + nouveau_tv_norm); > if (i < 0) > NV_WARN(drm, "Invalid TV norm setting \"%s\"\n", > nouveau_tv_norm); > diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c > index 5936b6b3b15d..ea35d283b2d2 100644 > --- a/drivers/gpu/drm/nouveau/dispnv50/crc.c > +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c > @@ -38,7 +38,7 @@ static int nv50_crc_parse_source(const char *buf, enum nv50_crc_source *s) > return 0; > } > > - i = match_string(nv50_crc_sources, ARRAY_SIZE(nv50_crc_sources), buf); > + i = match_string(nv50_crc_sources, buf); > if (i < 0) > return i; > > diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c > index 4f608a3790fb..3546f5a7e7bd 100644 > --- a/drivers/hwmon/ltc4282.c > +++ b/drivers/hwmon/ltc4282.c > @@ -21,7 +21,7 @@ > #include <linux/mutex.h> > #include <linux/regmap.h> > #include <linux/property.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/units.h> > #include <linux/util_macros.h> > > @@ -1282,8 +1282,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) > > ret = device_property_read_string(dev, "adi,gpio1-mode", &func); > if (!ret) { > - ret = match_string(ltc4282_gpio1_modes, > - ARRAY_SIZE(ltc4282_gpio1_modes), func); > + ret = match_string(ltc4282_gpio1_modes, func); > if (ret < 0) > return dev_err_probe(dev, ret, > "Invalid func(%s) for gpio1\n", > @@ -1298,8 +1297,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) > > ret = device_property_read_string(dev, "adi,gpio2-mode", &func); > if (!ret) { > - ret = match_string(ltc4282_gpio2_modes, > - ARRAY_SIZE(ltc4282_gpio2_modes), func); > + ret = match_string(ltc4282_gpio2_modes, func); > if (ret < 0) > return dev_err_probe(dev, ret, > "Invalid func(%s) for gpio2\n", > @@ -1463,8 +1461,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) > ret = device_property_read_string(dev, "adi,overvoltage-dividers", > ÷r); > if (!ret) { > - int div = match_string(ltc4282_dividers, > - ARRAY_SIZE(ltc4282_dividers), divider); > + int div = match_string(ltc4282_dividers, divider); > if (div < 0) > return dev_err_probe(dev, -EINVAL, > "Invalid val(%s) for adi,overvoltage-divider\n", > @@ -1478,8 +1475,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) > ret = device_property_read_string(dev, "adi,undervoltage-dividers", > ÷r); > if (!ret) { > - int div = match_string(ltc4282_dividers, > - ARRAY_SIZE(ltc4282_dividers), divider); > + int div = match_string(ltc4282_dividers, divider); > if (div < 0) > return dev_err_probe(dev, -EINVAL, > "Invalid val(%s) for adi,undervoltage-divider\n", > diff --git a/drivers/hwmon/nct6775-platform.c b/drivers/hwmon/nct6775-platform.c > index 9aa4dcf4a6f3..eb7eef9d2a76 100644 > --- a/drivers/hwmon/nct6775-platform.c > +++ b/drivers/hwmon/nct6775-platform.c > @@ -1514,13 +1514,11 @@ static int __init sensors_nct6775_platform_init(void) > > if (board_name && board_vendor && > !strcmp(board_vendor, "ASUSTeK COMPUTER INC.")) { > - err = match_string(asus_wmi_boards, ARRAY_SIZE(asus_wmi_boards), > - board_name); > + err = match_string(asus_wmi_boards, board_name); > if (err >= 0) > access = nct6775_determine_access(ASUSWMI_DEVICE_UID); > > - err = match_string(asus_msi_boards, ARRAY_SIZE(asus_msi_boards), > - board_name); > + err = match_string(asus_msi_boards, board_name); > if (err >= 0) > access = nct6775_determine_access(ASUSMSI_DEVICE_UID); > } > diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c > index be63d5b8f193..b083f1360111 100644 > --- a/drivers/hwtracing/intel_th/msu.c > +++ b/drivers/hwtracing/intel_th/msu.c > @@ -1901,7 +1901,7 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, > if (!mode) > return -ENOMEM; > > - i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode); > + i = match_string(msc_mode, mode); > if (i >= 0) { > kfree(mode); > goto found; > diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c > index d2d2a6dbe29f..0eccb636b2fe 100644 > --- a/drivers/i2c/busses/i2c-i801.c > +++ b/drivers/i2c/busses/i2c-i801.c > @@ -111,7 +111,7 @@ > #include <linux/io.h> > #include <linux/dmi.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/completion.h> > #include <linux/err.h> > #include <linux/platform_device.h> > @@ -1186,7 +1186,7 @@ static acpi_status check_acpi_smo88xx_device(acpi_handle obj_handle, > if (!hid) > goto smo88xx_not_found; > > - i = match_string(acpi_smo8800_ids, ARRAY_SIZE(acpi_smo8800_ids), hid); > + i = match_string(acpi_smo8800_ids, hid); > if (i < 0) > goto smo88xx_not_found; > > diff --git a/drivers/leds/leds-sun50i-a100.c b/drivers/leds/leds-sun50i-a100.c > index 119eff9471f0..4220f1f8a503 100644 > --- a/drivers/leds/leds-sun50i-a100.c > +++ b/drivers/leds/leds-sun50i-a100.c > @@ -256,7 +256,7 @@ static int sun50i_a100_ledc_parse_format(struct device *dev, > > device_property_read_string(dev, "allwinner,pixel-format", &format); > > - i = match_string(sun50i_a100_ledc_formats, ARRAY_SIZE(sun50i_a100_ledc_formats), format); > + i = match_string(sun50i_a100_ledc_formats, format); > if (i < 0) > return dev_err_probe(dev, i, "Bad pixel format '%s'\n", format); > > diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c > index 949feb03d4f8..06c208d8a992 100644 > --- a/drivers/mfd/omap-usb-host.c > +++ b/drivers/mfd/omap-usb-host.c > @@ -498,7 +498,7 @@ static int usbhs_omap_get_dt_pdata(struct device *dev, > continue; > > /* get 'enum usbhs_omap_port_mode' from port mode string */ > - ret = match_string(port_modes, ARRAY_SIZE(port_modes), mode); > + ret = match_string(port_modes, mode); > if (ret < 0) { > dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree\n", > i, mode); > diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c > index cc9d28b75eb9..1865e26ae736 100644 > --- a/drivers/mmc/host/sdhci-xenon-phy.c > +++ b/drivers/mmc/host/sdhci-xenon-phy.c > @@ -135,15 +135,14 @@ struct xenon_emmc_phy_regs { > u32 logic_timing_val; > }; > > -static const char * const phy_types[] = { > - "emmc 5.0 phy", > - "emmc 5.1 phy" > -}; > - > enum xenon_phy_type_enum { > EMMC_5_0_PHY, > EMMC_5_1_PHY, > - NR_PHY_TYPES > +}; > + > +static const char * const phy_types[] = { > + [EMMC_5_0_PHY] = "emmc 5.0 phy", > + [EMMC_5_1_PHY] = "emmc 5.1 phy", > }; > > enum soc_pad_ctrl_type { > @@ -852,7 +851,7 @@ static int xenon_add_phy(struct device *dev, struct sdhci_host *host, > struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host); > int ret; > > - priv->phy_type = match_string(phy_types, NR_PHY_TYPES, phy_name); > + priv->phy_type = match_string(phy_types, phy_name); > if (priv->phy_type < 0) { > dev_err(mmc_dev(host->mmc), > "Unable to determine PHY name %s. Use default eMMC 5.1 PHY\n", > diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c > index e229de32ff50..8b3fb2c72bd6 100644 > --- a/drivers/mtd/nand/raw/nand_macronix.c > +++ b/drivers/mtd/nand/raw/nand_macronix.c > @@ -178,8 +178,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) > if (!chip->parameters.supports_set_get_features) > return; > > - i = match_string(broken_get_timings, ARRAY_SIZE(broken_get_timings), > - chip->parameters.model); > + i = match_string(broken_get_timings, chip->parameters.model); > if (i < 0) > return; > > @@ -317,8 +316,7 @@ static void macronix_nand_deep_power_down_support(struct nand_chip *chip) > "MX30UF4G28AD", > }; > > - i = match_string(deep_power_down_dev, ARRAY_SIZE(deep_power_down_dev), > - chip->parameters.model); > + i = match_string(deep_power_down_dev, chip->parameters.model); > if (i < 0) > return; > > @@ -461,9 +459,7 @@ static void macronix_nand_setup_otp(struct nand_chip *chip) > }; > struct mtd_info *mtd; > > - if (match_string(supported_otp_models, > - ARRAY_SIZE(supported_otp_models), > - chip->parameters.model) < 0) > + if (match_string(supported_otp_models, chip->parameters.model) < 0) > return; > > if (!chip->parameters.supports_set_get_features) > diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > index 557c591a6ce3..cff23dc56641 100644 > --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > @@ -4,7 +4,7 @@ > */ > > #include <linux/sort.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include "t4_regs.h" > #include "cxgb4.h" > @@ -1191,9 +1191,9 @@ static int cudbg_get_mem_region(struct adapter *padap, > if (rc) > return rc; > > - i = match_string(cudbg_region, ARRAY_SIZE(cudbg_region), region_name); > + i = match_string(cudbg_region, region_name); > if (i < 0) > - return -EINVAL; > + return i; > > idx = i; > for (i = 0; i < meminfo->mem_c; i++) { > diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > index 79f4ac8cbc72..58388ca9ecfa 100644 > --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > @@ -724,7 +724,7 @@ iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf, > }; > int ret, bt_force_ant_mode; > > - ret = match_string(modes_str, ARRAY_SIZE(modes_str), buf); > + ret = match_string(modes_str, buf); > if (ret < 0) > return ret; > > diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c > index ac6293c24976..2d317c7e1cea 100644 > --- a/drivers/pci/pcie/aer.c > +++ b/drivers/pci/pcie/aer.c > @@ -210,7 +210,7 @@ void pcie_ecrc_get_policy(char *str) > { > int i; > > - i = match_string(ecrc_policy_str, ARRAY_SIZE(ecrc_policy_str), str); > + i = match_string(ecrc_policy_str, str); > if (i < 0) > return; > > diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c > index 25b86bbb9cec..762674acb7fc 100644 > --- a/drivers/phy/mediatek/phy-mtk-tphy.c > +++ b/drivers/phy/mediatek/phy-mtk-tphy.c > @@ -389,7 +389,7 @@ static int u2_phy_params_show(struct seq_file *sf, void *unused) > u32 val = 0; > int ret; > > - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); > + ret = match_string(u2_phy_files, fname); > if (ret < 0) > return ret; > > @@ -464,7 +464,7 @@ static ssize_t u2_phy_params_write(struct file *file, const char __user *ubuf, > if (rc) > return rc; > > - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); > + ret = match_string(u2_phy_files, fname); > if (ret < 0) > return (ssize_t)ret; > > @@ -530,7 +530,7 @@ static int u3_phy_params_show(struct seq_file *sf, void *unused) > u32 tmp; > int ret; > > - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); > + ret = match_string(u3_phy_files, fname); > if (ret < 0) > return ret; > > @@ -590,7 +590,7 @@ static ssize_t u3_phy_params_write(struct file *file, const char __user *ubuf, > if (rc) > return rc; > > - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); > + ret = match_string(u3_phy_files, fname); > if (ret < 0) > return (ssize_t)ret; > > diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c > index cfdb54b6070a..5fb8656aa31d 100644 > --- a/drivers/phy/tegra/xusb.c > +++ b/drivers/phy/tegra/xusb.c > @@ -123,7 +123,7 @@ int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane, > if (err < 0) > return err; > > - err = match_string(lane->soc->funcs, lane->soc->num_funcs, function); > + err = __match_string(lane->soc->funcs, lane->soc->num_funcs, function); > if (err < 0) { > dev_err(dev, "invalid function \"%s\" for lane \"%pOFn\"\n", > function, np); > @@ -748,7 +748,7 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2) > usb2->internal = of_property_read_bool(np, "nvidia,internal"); > > if (!of_property_read_string(np, "mode", &mode)) { > - int err = match_string(modes, ARRAY_SIZE(modes), mode); > + int err = match_string(modes, mode); > if (err < 0) { > dev_err(&port->dev, "invalid value %s for \"mode\"\n", > mode); > diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > index 4c4ada06423d..55b5464595b5 100644 > --- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > +++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > @@ -352,7 +352,7 @@ static int armada_37xx_pmx_set_by_name(struct pinctrl_dev *pctldev, > > dev_dbg(dev, "enable function %s group %s\n", name, grp->name); > > - func = match_string(grp->funcs, NB_FUNCS, name); > + func = match_string(grp->funcs, name); > if (func < 0) > return -ENOTSUPP; > > @@ -885,7 +885,7 @@ static int armada_37xx_fill_group(struct armada_37xx_pinctrl *info) > for (j = 0; j < grp->extra_npins; j++) > grp->pins[i+j] = grp->extra_pin + j; > > - for (f = 0; (f < NB_FUNCS) && grp->funcs[f]; f++) { > + for (f = 0; (f < ARRAY_SIZE(grp->funcs)) && grp->funcs[f]; f++) { > int ret; > /* check for unique functions and count groups */ > ret = armada_37xx_add_function(info->funcs, &funcsize, > @@ -937,7 +937,7 @@ static int armada_37xx_fill_func(struct armada_37xx_pinctrl *info) > struct armada_37xx_pin_group *gp = &info->groups[g]; > int f; > > - f = match_string(gp->funcs, NB_FUNCS, name); > + f = match_string(gp->funcs, name); > if (f < 0) > continue; > > diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c > index addba55334d9..af2334b16b94 100644 > --- a/drivers/pinctrl/pinmux.c > +++ b/drivers/pinctrl/pinmux.c > @@ -23,7 +23,7 @@ > #include <linux/radix-tree.h> > #include <linux/seq_file.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include <linux/pinctrl/machine.h> > #include <linux/pinctrl/pinctrl.h> > @@ -376,7 +376,7 @@ int pinmux_map_to_setting(const struct pinctrl_map *map, > } > if (map->data.mux.group) { > group = map->data.mux.group; > - ret = match_string(groups, num_groups, group); > + ret = __match_string(groups, num_groups, group); > if (ret < 0) { > dev_err(pctldev->dev, > "invalid group \"%s\" for function \"%s\"\n", > @@ -730,7 +730,7 @@ static ssize_t pinmux_select_write(struct file *file, const char __user *user_bu > goto exit_free_buf; > } > > - ret = match_string(groups, num_groups, gname); > + ret = __match_string(groups, num_groups, gname); > if (ret < 0) { > dev_err(pctldev->dev, "invalid group %s", gname); > goto exit_free_buf; > diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c > index 5fa553023842..ad7a9063c5d2 100644 > --- a/drivers/platform/x86/hp/hp-wmi.c > +++ b/drivers/platform/x86/hp/hp-wmi.c > @@ -25,7 +25,7 @@ > #include <linux/hwmon.h> > #include <linux/acpi.h> > #include <linux/rfkill.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/dmi.h> > > MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>"); > @@ -443,18 +443,15 @@ static int hp_wmi_get_tablet_mode(void) > { > char system_device_mode[4] = { 0 }; > const char *chassis_type; > - bool tablet_found; > int ret; > > chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); > if (!chassis_type) > return -ENODEV; > > - tablet_found = match_string(tablet_chassis_types, > - ARRAY_SIZE(tablet_chassis_types), > - chassis_type) >= 0; > - if (!tablet_found) > - return -ENODEV; > + ret = match_string(tablet_chassis_types, chassis_type); > + if (ret < 0) > + return ret; > > ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, > system_device_mode, zero_if_sup(system_device_mode), > @@ -490,9 +487,7 @@ static bool is_omen_thermal_profile(void) > if (!board_name) > return false; > > - return match_string(omen_thermal_profile_boards, > - ARRAY_SIZE(omen_thermal_profile_boards), > - board_name) >= 0; > + return match_string(omen_thermal_profile_boards, board_name) >= 0; > } > > static int omen_get_thermal_policy_version(void) > @@ -503,9 +498,9 @@ static int omen_get_thermal_policy_version(void) > const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); > > if (board_name) { > - int matches = match_string(omen_thermal_profile_force_v0_boards, > - ARRAY_SIZE(omen_thermal_profile_force_v0_boards), > - board_name); > + int matches; > + > + matches = match_string(omen_thermal_profile_force_v0_boards, board_name); > if (matches >= 0) > return 0; > } > @@ -1230,9 +1225,7 @@ static bool has_omen_thermal_profile_ec_timer(void) > if (!board_name) > return false; > > - return match_string(omen_timed_thermal_profile_boards, > - ARRAY_SIZE(omen_timed_thermal_profile_boards), > - board_name) >= 0; > + return match_string(omen_timed_thermal_profile_boards, board_name) >= 0; > } > > inline int omen_thermal_profile_ec_flags_set(enum hp_thermal_profile_omen_flags flags) > @@ -1376,9 +1369,7 @@ static bool is_victus_thermal_profile(void) > if (!board_name) > return false; > > - return match_string(victus_thermal_profile_boards, > - ARRAY_SIZE(victus_thermal_profile_boards), > - board_name) >= 0; > + return match_string(victus_thermal_profile_boards, board_name) >= 0; > } > > static int platform_profile_victus_get(struct platform_profile_handler *pprof, > diff --git a/drivers/platform/x86/msi-ec.c b/drivers/platform/x86/msi-ec.c > index f19504dbf164..a1b2dbb1a10f 100644 > --- a/drivers/platform/x86/msi-ec.c > +++ b/drivers/platform/x86/msi-ec.c > @@ -25,7 +25,7 @@ > #include <linux/module.h> > #include <linux/platform_device.h> > #include <linux/seq_file.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #define SM_ECO_NAME "eco" > #define SM_COMFORT_NAME "comfort" > @@ -1316,7 +1316,7 @@ static int __init load_configuration(void) > > /* load the suitable configuration, if exists */ > for (int i = 0; CONFIGS[i]; i++) { > - if (match_string(CONFIGS[i]->allowed_fw, -1, fw_version) != -EINVAL) { > + if (__match_string(CONFIGS[i]->allowed_fw, -1, fw_version) >= 0) { > conf = *CONFIGS[i]; > conf.allowed_fw = NULL; > return 0; > diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c > index 56f136b2d071..824c71965150 100644 > --- a/drivers/power/supply/ab8500_btemp.c > +++ b/drivers/power/supply/ab8500_btemp.c > @@ -556,7 +556,7 @@ static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data) > * For all psy where the name of your driver > * appears in any supplied_to > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c > index 55ab7a28056e..230a4efee210 100644 > --- a/drivers/power/supply/ab8500_chargalg.c > +++ b/drivers/power/supply/ab8500_chargalg.c > @@ -857,7 +857,7 @@ static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data) > psy = (struct power_supply *)data; > di = power_supply_get_drvdata(psy); > /* For all psy where the driver name appears in any supplied_to */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c > index 9b34d1a60f66..5eae14ca92fe 100644 > --- a/drivers/power/supply/ab8500_charger.c > +++ b/drivers/power/supply/ab8500_charger.c > @@ -1902,7 +1902,7 @@ static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) > * in practice what we will find will always be "ab8500_fg" as > * the fuel gauge is responsible of keeping track of VBAT. > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c > index 2ccaf6116c09..c3bc2833fc7e 100644 > --- a/drivers/power/supply/ab8500_fg.c > +++ b/drivers/power/supply/ab8500_fg.c > @@ -2197,7 +2197,7 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data) > * For all psy where the name of your driver > * appears in any supplied_to > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c > index 15c246d3b1a3..e87987a93860 100644 > --- a/drivers/staging/gdm724x/gdm_tty.c > +++ b/drivers/staging/gdm724x/gdm_tty.c > @@ -53,10 +53,9 @@ static int gdm_tty_install(struct tty_driver *driver, struct tty_struct *tty) > struct gdm *gdm = NULL; > int ret; > > - ret = match_string(DRIVER_STRING, TTY_MAX_COUNT, > - tty->driver->driver_name); > + ret = match_string(DRIVER_STRING, tty->driver->driver_name); > if (ret < 0) > - return -ENODEV; > + return ret; > > mutex_lock(&gdm_table_lock); > gdm = gdm_table[ret][tty->index]; > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > index e56db75a94fb..dbd176b0fb1f 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > @@ -111,7 +111,7 @@ static ssize_t suffix##_show(struct device *dev,\ > match_strs = (const char **)fivr_strings;\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > reg_val = readl((void __iomem *) (proc_priv->mmio_base + mmio_regs[ret].offset));\ > @@ -145,7 +145,7 @@ static ssize_t suffix##_store(struct device *dev,\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > if (mmio_regs[ret].read_only)\ > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > index f298e7442662..57f456befb34 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > @@ -50,7 +50,7 @@ static ssize_t workload_type_store(struct device *dev, > if (ret != 1) > return -EINVAL; > > - ret = match_string(workload_types, -1, str_preference); > + ret = __match_string(workload_types, -1, str_preference); > if (ret < 0) > return ret; > > diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c > index b84efae26e15..657be0162dd9 100644 > --- a/drivers/usb/common/common.c > +++ b/drivers/usb/common/common.c > @@ -114,11 +114,11 @@ enum usb_device_speed usb_get_maximum_speed(struct device *dev) > if (ret < 0) > return USB_SPEED_UNKNOWN; > > - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); > + ret = match_string(ssp_rate, maximum_speed); > if (ret > 0) > return USB_SPEED_SUPER_PLUS; > > - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); > + ret = match_string(speed_names, maximum_speed); > return (ret < 0) ? USB_SPEED_UNKNOWN : ret; > } > EXPORT_SYMBOL_GPL(usb_get_maximum_speed); > @@ -141,7 +141,7 @@ enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev) > if (ret < 0) > return USB_SSP_GEN_UNKNOWN; > > - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); > + ret = match_string(ssp_rate, maximum_speed); > return (ret < 0) ? USB_SSP_GEN_UNKNOWN : ret; > } > EXPORT_SYMBOL_GPL(usb_get_maximum_ssp_rate); > @@ -184,7 +184,7 @@ static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str) > { > int ret; > > - ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str); > + ret = match_string(usb_dr_modes, str); > return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret; > } > > diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c > index 3cd6b184551c..90cee91f4ff9 100644 > --- a/drivers/usb/dwc3/dwc3-rtk.c > +++ b/drivers/usb/dwc3/dwc3-rtk.c > @@ -185,7 +185,7 @@ static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) > if (ret < 0) > goto out; > > - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); > + ret = match_string(speed_names, maximum_speed); > > out: > of_node_put(dwc3_np); > diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c > index 9610e647a8d4..7bc4695f8d0b 100644 > --- a/drivers/usb/typec/class.c > +++ b/drivers/usb/typec/class.c > @@ -1986,8 +1986,7 @@ EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); > */ > int typec_find_pwr_opmode(const char *name) > { > - return match_string(typec_pwr_opmodes, > - ARRAY_SIZE(typec_pwr_opmodes), name); > + return match_string(typec_pwr_opmodes, name); > } > EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); > > @@ -2001,8 +2000,7 @@ EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); > */ > int typec_find_orientation(const char *name) > { > - return match_string(typec_orientations, ARRAY_SIZE(typec_orientations), > - name); > + return match_string(typec_orientations, name); > } > EXPORT_SYMBOL_GPL(typec_find_orientation); > > @@ -2016,8 +2014,7 @@ EXPORT_SYMBOL_GPL(typec_find_orientation); > */ > int typec_find_port_power_role(const char *name) > { > - return match_string(typec_port_power_roles, > - ARRAY_SIZE(typec_port_power_roles), name); > + return match_string(typec_port_power_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_port_power_role); > > @@ -2031,7 +2028,7 @@ EXPORT_SYMBOL_GPL(typec_find_port_power_role); > */ > int typec_find_power_role(const char *name) > { > - return match_string(typec_roles, ARRAY_SIZE(typec_roles), name); > + return match_string(typec_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_power_role); > > @@ -2045,8 +2042,7 @@ EXPORT_SYMBOL_GPL(typec_find_power_role); > */ > int typec_find_port_data_role(const char *name) > { > - return match_string(typec_port_data_roles, > - ARRAY_SIZE(typec_port_data_roles), name); > + return match_string(typec_port_data_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_port_data_role); > > diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c > index ad76dbd20e65..2ce2d355a039 100644 > --- a/drivers/usb/typec/tipd/core.c > +++ b/drivers/usb/typec/tipd/core.c > @@ -722,8 +722,7 @@ static int tps6598x_check_mode(struct tps6598x *tps) > if (ret) > return ret; > > - ret = match_string(modes, ARRAY_SIZE(modes), mode); > - > + ret = match_string(modes, mode); > switch (ret) { > case TPS_MODE_APP: > case TPS_MODE_PTCH: > diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c > index 2ef56fa28aff..f1b562b94744 100644 > --- a/drivers/video/fbdev/pxafb.c > +++ b/drivers/video/fbdev/pxafb.c > @@ -37,9 +37,9 @@ > #include <linux/kernel.h> > #include <linux/sched.h> > #include <linux/errno.h> > -#include <linux/string.h> > #include <linux/interrupt.h> > #include <linux/slab.h> > +#include <linux/string_helpers.h> > #include <linux/mm.h> > #include <linux/fb.h> > #include <linux/delay.h> > @@ -2107,7 +2107,7 @@ static int of_get_pxafb_display(struct device *dev, struct device_node *disp, > if (ret) > s = "color-tft"; > > - i = match_string(lcd_types, -1, s); > + i = __match_string(lcd_types, -1, s); > if (i < 0) { > dev_err(dev, "lcd-type %s is unknown\n", s); > return i; > diff --git a/fs/bcachefs/compress.c b/fs/bcachefs/compress.c > index 1410365a8891..a62c5dd5b470 100644 > --- a/fs/bcachefs/compress.c > +++ b/fs/bcachefs/compress.c > @@ -667,7 +667,7 @@ int bch2_opt_compression_parse(struct bch_fs *c, const char *_val, u64 *res, > type_str = strsep(&p, ":"); > level_str = p; > > - ret = match_string(bch2_compression_opts, -1, type_str); > + ret = __match_string(bch2_compression_opts, -1, type_str); > if (ret < 0 && err) > prt_str(err, "invalid compression type"); > if (ret < 0) > diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c > index bb068fd72465..cbe4e820419f 100644 > --- a/fs/bcachefs/opts.c > +++ b/fs/bcachefs/opts.c > @@ -122,7 +122,7 @@ static int bch2_opt_fix_errors_parse(struct bch_fs *c, const char *val, u64 *res > if (!val) { > *res = FSCK_FIX_yes; > } else { > - int ret = match_string(bch2_fsck_fix_opts, -1, val); > + int ret = __match_string(bch2_fsck_fix_opts, -1, val); > > if (ret < 0 && err) > prt_str(err, "fix_errors: invalid selection"); > @@ -366,7 +366,7 @@ int bch2_opt_parse(struct bch_fs *c, > return -EINVAL; > } > > - ret = match_string(opt->choices, -1, val); > + ret = __match_string(opt->choices, -1, val); > if (ret < 0) { > if (err) > prt_printf(err, "%s: invalid selection", > diff --git a/fs/bcachefs/util.c b/fs/bcachefs/util.c > index de331dec2a99..8cef641a38fb 100644 > --- a/fs/bcachefs/util.c > +++ b/fs/bcachefs/util.c > @@ -19,7 +19,7 @@ > #include <linux/preempt.h> > #include <linux/random.h> > #include <linux/seq_file.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/types.h> > #include <linux/sched/clock.h> > > @@ -215,7 +215,7 @@ u64 bch2_read_flag_list(char *opt, const char * const list[]) > s = strim(d); > > while ((p = strsep(&s, ","))) { > - int flag = match_string(list, -1, p); > + int flag = __match_string(list, -1, p); > > if (flag < 0) { > ret = -1; > diff --git a/fs/ubifs/auth.c b/fs/ubifs/auth.c > index a4a0158f712d..fc0da18bfa65 100644 > --- a/fs/ubifs/auth.c > +++ b/fs/ubifs/auth.c > @@ -264,13 +264,13 @@ int ubifs_init_authentication(struct ubifs_info *c) > return -EINVAL; > } > > - c->auth_hash_algo = match_string(hash_algo_name, HASH_ALGO__LAST, > - c->auth_hash_name); > - if ((int)c->auth_hash_algo < 0) { > + err = __match_string(hash_algo_name, HASH_ALGO__LAST, c->auth_hash_name); > + if (err < 0) { > ubifs_err(c, "Unknown hash algo %s specified", > c->auth_hash_name); > - return -EINVAL; > + return err; > } > + c->auth_hash_algo = err; > > snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", > c->auth_hash_name); > diff --git a/include/linux/string.h b/include/linux/string.h > index 60168aa2af07..92fc7631f6a4 100644 > --- a/include/linux/string.h > +++ b/include/linux/string.h > @@ -303,8 +303,18 @@ extern unsigned long long memparse(const char *ptr, char **retptr); > extern bool parse_option_str(const char *str, const char *option); > extern char *next_arg(char *args, char **param, char **val); > > +int __match_string(const char * const *array, size_t n, const char *string); > + > +/** > + * match_string - matches given string in an array > + * @_a: array of strings > + * @_s: string to match with > + * > + * Helper for __match_string(). Calculates the size of @a automatically. > + */ > +#define match_string(_a, _s) __match_string(_a, ARRAY_SIZE(_a), _s) > + > extern bool sysfs_streq(const char *s1, const char *s2); > -int match_string(const char * const *array, size_t n, const char *string); > int __sysfs_match_string(const char * const *array, size_t n, const char *s); > > /** > diff --git a/kernel/cgroup/rdma.c b/kernel/cgroup/rdma.c > index ef5878fb2005..10105cfc5981 100644 > --- a/kernel/cgroup/rdma.c > +++ b/kernel/cgroup/rdma.c > @@ -366,7 +366,7 @@ static int parse_resource(char *c, int *intval) > if (!name || !value) > return -EINVAL; > > - i = match_string(rdmacg_resource_names, RDMACG_RESOURCE_MAX, name); > + i = match_string(rdmacg_resource_names, name); > if (i < 0) > return i; > > diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c > index c1eb9a1afd13..b6238341e3c0 100644 > --- a/kernel/sched/debug.c > +++ b/kernel/sched/debug.c > @@ -105,7 +105,7 @@ static int sched_feat_set(char *cmp) > cmp += 3; > } > > - i = match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); > + i = __match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); > if (i < 0) > return i; > > diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c > index 578a49ff5c32..13c0a1fa30cd 100644 > --- a/kernel/trace/trace.c > +++ b/kernel/trace/trace.c > @@ -32,7 +32,6 @@ > #include <linux/percpu.h> > #include <linux/splice.h> > #include <linux/kdebug.h> > -#include <linux/string.h> > #include <linux/mount.h> > #include <linux/rwsem.h> > #include <linux/slab.h> > @@ -45,6 +44,7 @@ > #include <linux/trace.h> > #include <linux/sched/clock.h> > #include <linux/sched/rt.h> > +#include <linux/string_helpers.h> > #include <linux/fsnotify.h> > #include <linux/irq_work.h> > #include <linux/workqueue.h> > @@ -5309,7 +5309,7 @@ int trace_set_options(struct trace_array *tr, char *option) > mutex_lock(&event_mutex); > mutex_lock(&trace_types_lock); > > - ret = match_string(trace_options, -1, cmp); > + ret = __match_string(trace_options, -1, cmp); > /* If no option could be set, test the specific tracer options */ > if (ret < 0) > ret = set_tracer_option(tr, cmp, neg); > diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c > index a8e28f9b9271..7bed499effd3 100644 > --- a/kernel/trace/trace_osnoise.c > +++ b/kernel/trace/trace_osnoise.c > @@ -2230,9 +2230,9 @@ static ssize_t osnoise_options_write(struct file *filp, const char __user *ubuf, > enable = false; > } > > - option = match_string(osnoise_options_str, OSN_MAX, option_str); > + option = match_string(osnoise_options_str, option_str); > if (option < 0) > - return -EINVAL; > + return option; > > /* > * trace_types_lock is taken to avoid concurrency on start/stop. > diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c > index f2c5e7910bb1..cd4fbcea38ba 100644 > --- a/lib/dynamic_debug.c > +++ b/lib/dynamic_debug.c > @@ -24,7 +24,6 @@ > #include <linux/list.h> > #include <linux/sysctl.h> > #include <linux/ctype.h> > -#include <linux/string.h> > #include <linux/parser.h> > #include <linux/string_helpers.h> > #include <linux/uaccess.h> > @@ -154,7 +153,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons > int idx; > > list_for_each_entry(map, &dt->maps, link) { > - idx = match_string(map->class_names, map->length, class_string); > + idx = __match_string(map->class_names, map->length, class_string); > if (idx >= 0) { > *class_id = idx + map->base; > return map; > @@ -665,7 +664,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa > if (*cl_str == '+') > cl_str++; > } > - cls_id = match_string(map->class_names, map->length, cl_str); > + cls_id = __match_string(map->class_names, map->length, cl_str); > if (cls_id < 0) { > pr_err("%s unknown to %s\n", cl_str, KP_NAME(kp)); > continue; > diff --git a/lib/string_helpers.c b/lib/string_helpers.c > index 69ba49b853c7..d3d0d2154146 100644 > --- a/lib/string_helpers.c > +++ b/lib/string_helpers.c > @@ -898,7 +898,7 @@ bool sysfs_streq(const char *s1, const char *s2) > EXPORT_SYMBOL(sysfs_streq); > > /** > - * match_string - matches given string in an array > + * __match_string - matches given string in an array > * @array: array of strings > * @n: number of strings in the array or -1 for NULL terminated arrays > * @string: string to match with > @@ -914,7 +914,7 @@ EXPORT_SYMBOL(sysfs_streq); > * Return: > * index of a @string in the @array if matches, or %-EINVAL otherwise. > */ > -int match_string(const char * const *array, size_t n, const char *string) > +int __match_string(const char * const *array, size_t n, const char *string) > { > int index; > const char *item; > @@ -929,7 +929,7 @@ int match_string(const char * const *array, size_t n, const char *string) > > return -EINVAL; > } > -EXPORT_SYMBOL(match_string); > +EXPORT_SYMBOL(__match_string); > > /** > * __sysfs_match_string - matches given string in an array > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index aec756ae5637..89c132170431 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -89,7 +89,6 @@ > #include <linux/nodemask.h> > #include <linux/cpuset.h> > #include <linux/slab.h> > -#include <linux/string.h> > #include <linux/export.h> > #include <linux/nsproxy.h> > #include <linux/interrupt.h> > @@ -103,6 +102,7 @@ > #include <linux/ksm.h> > #include <linux/rmap.h> > #include <linux/security.h> > +#include <linux/string_helpers.h> > #include <linux/syscalls.h> > #include <linux/ctype.h> > #include <linux/mm_inline.h> > @@ -3183,7 +3183,7 @@ int mpol_parse_str(char *str, struct mempolicy **mpol) > } else > nodes_clear(nodes); > > - mode = match_string(policy_modes, MPOL_MAX, str); > + mode = match_string(policy_modes, str); > if (mode < 0) > goto out; > > diff --git a/mm/vmpressure.c b/mm/vmpressure.c > index bd5183dfd879..eaaa133ce12b 100644 > --- a/mm/vmpressure.c > +++ b/mm/vmpressure.c > @@ -388,7 +388,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > > /* Find required level */ > token = strsep(&spec, ","); > - ret = match_string(vmpressure_str_levels, VMPRESSURE_NUM_LEVELS, token); > + ret = match_string(vmpressure_str_levels, token); > if (ret < 0) > goto out; > level = ret; > @@ -396,7 +396,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > /* Find optional mode */ > token = strsep(&spec, ","); > if (token) { > - ret = match_string(vmpressure_str_modes, VMPRESSURE_NUM_MODES, token); > + ret = match_string(vmpressure_str_modes, token); > if (ret < 0) > goto out; > mode = ret; > diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c > index 6239777090c4..e3fc94b4c7e5 100644 > --- a/security/apparmor/lsm.c > +++ b/security/apparmor/lsm.c > @@ -1820,9 +1820,9 @@ static int param_set_audit(const char *val, const struct kernel_param *kp) > if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) > return -EPERM; > > - i = match_string(audit_mode_names, AUDIT_MAX_INDEX, val); > + i = __match_string(audit_mode_names, AUDIT_MAX_INDEX, val); > if (i < 0) > - return -EINVAL; > + return i; > > aa_g_audit = i; > return 0; > @@ -1849,10 +1849,9 @@ static int param_set_mode(const char *val, const struct kernel_param *kp) > if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) > return -EPERM; > > - i = match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, > - val); > + i = __match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, val); > if (i < 0) > - return -EINVAL; > + return i; > > aa_g_profile_mode = i; > return 0; > diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c > index f04f43af651c..49d6e9cc3387 100644 > --- a/security/integrity/ima/ima_main.c > +++ b/security/integrity/ima/ima_main.c > @@ -64,7 +64,7 @@ static int __init hash_setup(char *str) > goto out; > } > > - i = match_string(hash_algo_name, HASH_ALGO__LAST, str); > + i = __match_string(hash_algo_name, HASH_ALGO__LAST, str); > if (i < 0) { > pr_err("invalid hash algorithm \"%s\"", str); > return 1; > diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c > index c0556907c2e6..fa67c5794071 100644 > --- a/security/integrity/ima/ima_policy.c > +++ b/security/integrity/ima/ima_policy.c > @@ -1380,7 +1380,7 @@ static unsigned int ima_parse_appraise_algos(char *arg) > char *token; > > while ((token = strsep(&arg, ",")) != NULL) { > - idx = match_string(hash_algo_name, HASH_ALGO__LAST, token); > + idx = __match_string(hash_algo_name, HASH_ALGO__LAST, token); > > if (idx < 0) { > pr_err("unknown hash algorithm \"%s\"", > diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c > index 98ae0e8cba87..5b38069daa0a 100644 > --- a/sound/firewire/oxfw/oxfw.c > +++ b/sound/firewire/oxfw/oxfw.c > @@ -59,7 +59,7 @@ static bool detect_loud_models(struct fw_unit *unit) > if (err < 0) > return false; > > - return match_string(models, ARRAY_SIZE(models), model) >= 0; > + return match_string(models, model) >= 0; > } > > static int name_card(struct snd_oxfw *oxfw, const struct ieee1394_device_id *entry) > diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c > index eb3aca16359c..73e15d5d6be9 100644 > --- a/sound/pci/oxygen/oxygen_mixer.c > +++ b/sound/pci/oxygen/oxygen_mixer.c > @@ -1074,7 +1074,7 @@ static int add_controls(struct oxygen *chip, > err = snd_ctl_add(chip->card, ctl); > if (err < 0) > return err; > - j = match_string(known_ctl_names, CONTROL_COUNT, ctl->id.name); > + j = match_string(known_ctl_names, ctl->id.name); > if (j >= 0) { > chip->controls[j] = ctl; > ctl->private_free = oxygen_any_ctl_free; > diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c > index 8b56ee550c09..4736a4ba0e1f 100644 > --- a/sound/soc/codecs/max98088.c > +++ b/sound/soc/codecs/max98088.c > @@ -1414,7 +1414,7 @@ static int max98088_get_channel(struct snd_soc_component *component, const char > { > int ret; > > - ret = match_string(eq_mode_name, ARRAY_SIZE(eq_mode_name), name); > + ret = match_string(eq_mode_name, name); > if (ret < 0) > dev_err(component->dev, "Bad EQ channel name '%s'\n", name); > return ret; > diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c > index 7e525d49328d..430bce3333a9 100644 > --- a/sound/soc/codecs/max98095.c > +++ b/sound/soc/codecs/max98095.c > @@ -1627,7 +1627,7 @@ static int max98095_get_bq_channel(struct snd_soc_component *component, > { > int ret; > > - ret = match_string(bq_mode_name, ARRAY_SIZE(bq_mode_name), name); > + ret = match_string(bq_mode_name, name); > if (ret < 0) > dev_err(component->dev, "Bad biquad channel name '%s'\n", name); > return ret; > diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c > index 16dad4a45443..7064f4cae549 100644 > --- a/sound/soc/soc-dapm.c > +++ b/sound/soc/soc-dapm.c > @@ -769,14 +769,13 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, > item = 0; > } > > - i = match_string(e->texts, e->items, control_name); > + i = __match_string(e->texts, e->items, control_name); > if (i < 0) > - return -ENODEV; > + return i; > > path->name = e->texts[i]; > path->connect = (i == item); > return 0; > - > } > > /* set up initial codec paths */
Hi Andy, On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> nice patch, I checked some (maybe most) of your changes. There are a few unrelated changes which I don't mind, but there are two errors where the error value changes from ENODEV to EINVAL. Find the comments through the line. ... > diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c > index 1b7e82a0ad2e..b6f52f44625f 100644 > --- a/drivers/cpufreq/amd-pstate.c > +++ b/drivers/cpufreq/amd-pstate.c > @@ -1117,9 +1117,9 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) > - return -EINVAL; > + return ret; a bit of unrelated changes here, but I guess no one will complain :-) > > mutex_lock(&amd_pstate_limits_lock); > ret = amd_pstate_set_energy_pref_index(cpudata, ret); ... > diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c > index cc9d28b75eb9..1865e26ae736 100644 > --- a/drivers/mmc/host/sdhci-xenon-phy.c > +++ b/drivers/mmc/host/sdhci-xenon-phy.c > @@ -135,15 +135,14 @@ struct xenon_emmc_phy_regs { > u32 logic_timing_val; > }; > > -static const char * const phy_types[] = { > - "emmc 5.0 phy", > - "emmc 5.1 phy" > -}; > - > enum xenon_phy_type_enum { > EMMC_5_0_PHY, > EMMC_5_1_PHY, > - NR_PHY_TYPES > +}; > + > +static const char * const phy_types[] = { > + [EMMC_5_0_PHY] = "emmc 5.0 phy", > + [EMMC_5_1_PHY] = "emmc 5.1 phy", > }; Another unrelated cleanup, but I don't complain > enum soc_pad_ctrl_type { ... > - tablet_found = match_string(tablet_chassis_types, > - ARRAY_SIZE(tablet_chassis_types), > - chassis_type) >= 0; > - if (!tablet_found) > - return -ENODEV; > + ret = match_string(tablet_chassis_types, chassis_type); > + if (ret < 0) > + return ret; This is a logical change though, because we are changing from -ENODEV to -EINVAL. Even if it might look the right thing, but still, it's a logical change. > > ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, > system_device_mode, zero_if_sup(system_device_mode), > @@ -490,9 +487,7 @@ static bool is_omen_thermal_profile(void) > if (!board_name) > return false; > > - return match_string(omen_thermal_profile_boards, > - ARRAY_SIZE(omen_thermal_profile_boards), > - board_name) >= 0; > + return match_string(omen_thermal_profile_boards, board_name) >= 0; > } > > static int omen_get_thermal_policy_version(void) ... > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > index e56db75a94fb..dbd176b0fb1f 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > @@ -111,7 +111,7 @@ static ssize_t suffix##_show(struct device *dev,\ > match_strs = (const char **)fivr_strings;\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > reg_val = readl((void __iomem *) (proc_priv->mmio_base + mmio_regs[ret].offset));\ > @@ -145,7 +145,7 @@ static ssize_t suffix##_store(struct device *dev,\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > if (mmio_regs[ret].read_only)\ > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > index f298e7442662..57f456befb34 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > @@ -50,7 +50,7 @@ static ssize_t workload_type_store(struct device *dev, > if (ret != 1) > return -EINVAL; > > - ret = match_string(workload_types, -1, str_preference); > + ret = __match_string(workload_types, -1, str_preference); We could even thing of a "match_string_terminated" (or a better name), but maybe it's too much? > if (ret < 0) > return ret; > ... > - c->auth_hash_algo = match_string(hash_algo_name, HASH_ALGO__LAST, > - c->auth_hash_name); > - if ((int)c->auth_hash_algo < 0) { > + err = __match_string(hash_algo_name, HASH_ALGO__LAST, c->auth_hash_name); > + if (err < 0) { > ubifs_err(c, "Unknown hash algo %s specified", > c->auth_hash_name); > - return -EINVAL; > + return err; This is correct! > } > + c->auth_hash_algo = err; > > snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", > c->auth_hash_name); ... > +int __match_string(const char * const *array, size_t n, const char *string); > + > +/** > + * match_string - matches given string in an array > + * @_a: array of strings > + * @_s: string to match with > + * > + * Helper for __match_string(). Calculates the size of @a automatically. /@a/@_a/ > + */ > +#define match_string(_a, _s) __match_string(_a, ARRAY_SIZE(_a), _s) > + ... > diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c > index 6239777090c4..e3fc94b4c7e5 100644 > --- a/security/apparmor/lsm.c > +++ b/security/apparmor/lsm.c > @@ -1820,9 +1820,9 @@ static int param_set_audit(const char *val, const struct kernel_param *kp) > if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) > return -EPERM; > > - i = match_string(audit_mode_names, AUDIT_MAX_INDEX, val); > + i = __match_string(audit_mode_names, AUDIT_MAX_INDEX, val); pity here... this could have been a match_string, but the MAX_INDEX is hardcoded outside the enum. > if (i < 0) > - return -EINVAL; > + return i; > > aa_g_audit = i; > return 0; ... > diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c > index 16dad4a45443..7064f4cae549 100644 > --- a/sound/soc/soc-dapm.c > +++ b/sound/soc/soc-dapm.c > @@ -769,14 +769,13 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, > item = 0; > } > > - i = match_string(e->texts, e->items, control_name); > + i = __match_string(e->texts, e->items, control_name); > if (i < 0) > - return -ENODEV; > + return i; Also this return value is wrong. Andi > > path->name = e->texts[i]; > path->connect = (i == item); > return 0; > - > } > > /* set up initial codec paths */ > -- > 2.43.0.rc1.1336.g36b5255a03ac >
On Tue, 04 Jun 2024 10:45:37 +0300 Jani Nikula <jani.nikula@linux.intel.com> wrote: > On Sun, 02 Jun 2024, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote: > > Make two APIs look similar. Hence convert match_string() to be > > a 2-argument macro. In order to avoid unneeded churn, convert > > all users as well. There is no functional change intended. > > Why do we think it's a good idea to increase and normalize the use of > double-underscore function names across the kernel, like > __match_string() in this case? It should mean "reserved for the > implementation, not to be called directly". > > If it's to be used directly, it should be named accordingly, right? > > Being in line with __sysfs_match_string() isn't a great argument alone, > because this adds three times the number of __match_string() calls than > there are __sysfs_match_string() calls. It's not a good model to follow. > Arguably both should be renamed. Agreed. I want to get rid of any functions starting with an underscore except for those that are basically the same function used internally for convenience. Perhaps "match_string_dynamic()"? Where it is used for dynamically allocated arrays without known size. Or, allow a third parameter for dynamic arrays. #define match_string(_a, _s, ...) char _______STR[] = __stringify((__VA_ARGS__)); \ if (sizeof(_______STR) > 3) \ __match_string(_a, _s, ##__VA_ARGS__); \ else \ __match_string(_a, _s, ARRAY_SIZE(_a)); What the above stringify((__VA_ARGS__)) does is to check the size of any args added to match_string(). if there isn't any, it will turn into: "()\0", which is of size 3. If you add an argument, it will be: "(<arg>)\0", which will have a size greater than three. (trace_printk() does this trick in include/linux/kernel.h). This way, both: match_string(array, sting); or match_string(array, string, size); will work. -- Steve
On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > --- > > Compile tested with `make allyesconfig` and `make allmodconfig` > on x86_64, arm, aarch64, powerpc64 (8 builds total). > > I guess the best is to apply it to Linus' tree directly. > And now it seems a good timing as there are no new users > of this API either in v6.10-rcX, or in Linux Next. > > But if you think differently, tell me. > > arch/powerpc/xmon/xmon.c | 5 ++-- > arch/x86/kernel/cpu/mtrr/if.c | 4 +-- > crypto/asymmetric_keys/pkcs7_verify.c | 4 +-- > drivers/acpi/scan.c | 4 +-- > drivers/ata/pata_hpt366.c | 2 +- > drivers/ata/pata_hpt37x.c | 2 +- > drivers/base/property.c | 6 ++-- > drivers/char/ipmi/ipmi_msghandler.c | 2 +- > drivers/char/ipmi/ipmi_si_hardcode.c | 2 +- > drivers/clk/bcm/clk-bcm2835.c | 4 +-- > drivers/clk/rockchip/clk.c | 4 +-- > drivers/clk/tegra/clk-tegra124-emc.c | 7 ++--- > drivers/cpufreq/amd-pstate.c | 4 +-- > drivers/cpufreq/intel_pstate.c | 2 +- > .../intel/qat/qat_common/adf_cfg_services.c | 5 ++-- > .../gpu/drm/drm_panel_orientation_quirks.c | 2 +- > drivers/gpu/drm/i915/display/intel_pipe_crc.c | 2 +- > drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 +-- > drivers/gpu/drm/nouveau/dispnv50/crc.c | 2 +- > drivers/hwmon/ltc4282.c | 14 ++++----- > drivers/hwmon/nct6775-platform.c | 6 ++-- > drivers/hwtracing/intel_th/msu.c | 2 +- > drivers/i2c/busses/i2c-i801.c | 4 +-- > drivers/leds/leds-sun50i-a100.c | 2 +- > drivers/mfd/omap-usb-host.c | 2 +- > drivers/mmc/host/sdhci-xenon-phy.c | 13 ++++----- > drivers/mtd/nand/raw/nand_macronix.c | 10 ++----- > .../net/ethernet/chelsio/cxgb4/cudbg_lib.c | 6 ++-- > .../net/wireless/intel/iwlwifi/mvm/debugfs.c | 2 +- > drivers/pci/pcie/aer.c | 2 +- > drivers/phy/mediatek/phy-mtk-tphy.c | 8 ++--- > drivers/phy/tegra/xusb.c | 4 +-- > drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 6 ++-- > drivers/pinctrl/pinmux.c | 6 ++-- > drivers/platform/x86/hp/hp-wmi.c | 29 +++++++------------ > drivers/platform/x86/msi-ec.c | 4 +-- > drivers/power/supply/ab8500_btemp.c | 2 +- > drivers/power/supply/ab8500_chargalg.c | 2 +- > drivers/power/supply/ab8500_charger.c | 2 +- > drivers/power/supply/ab8500_fg.c | 2 +- > drivers/staging/gdm724x/gdm_tty.c | 5 ++-- > .../int340x_thermal/processor_thermal_rfim.c | 4 +-- > .../processor_thermal_wt_req.c | 2 +- > drivers/usb/common/common.c | 8 ++--- > drivers/usb/dwc3/dwc3-rtk.c | 2 +- > drivers/usb/typec/class.c | 14 ++++----- > drivers/usb/typec/tipd/core.c | 3 +- > drivers/video/fbdev/pxafb.c | 4 +-- > fs/bcachefs/compress.c | 2 +- > fs/bcachefs/opts.c | 4 +-- > fs/bcachefs/util.c | 4 +-- > fs/ubifs/auth.c | 8 ++--- > include/linux/string.h | 12 +++++++- > kernel/cgroup/rdma.c | 2 +- > kernel/sched/debug.c | 2 +- > kernel/trace/trace.c | 4 +-- > kernel/trace/trace_osnoise.c | 4 +-- > lib/dynamic_debug.c | 5 ++-- > lib/string_helpers.c | 6 ++-- > mm/mempolicy.c | 4 +-- > mm/vmpressure.c | 4 +-- > security/apparmor/lsm.c | 9 +++--- > security/integrity/ima/ima_main.c | 2 +- > security/integrity/ima/ima_policy.c | 2 +- > sound/firewire/oxfw/oxfw.c | 2 +- > sound/pci/oxygen/oxygen_mixer.c | 2 +- > sound/soc/codecs/max98088.c | 2 +- > sound/soc/codecs/max98095.c | 2 +- > sound/soc/soc-dapm.c | 5 ++-- > 69 files changed, 150 insertions(+), 174 deletions(-) > > diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c > index bd4813bad317..f479cc62674a 100644 > --- a/arch/powerpc/xmon/xmon.c > +++ b/arch/powerpc/xmon/xmon.c > @@ -3478,8 +3478,7 @@ skipbl(void) > return c; > } > > -#define N_PTREGS 44 > -static const char *regnames[N_PTREGS] = { > +static const char *regnames[] = { > "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", > "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", > "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", > @@ -3514,7 +3513,7 @@ scanhex(unsigned long *vp) > regname[i] = c; > } > regname[i] = 0; > - i = match_string(regnames, N_PTREGS, regname); > + i = match_string(regnames, regname); > if (i < 0) { > printf("invalid register name '%%%s'\n", regname); > return 0; > diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c > index a5c506f6da7f..9b749b848123 100644 > --- a/arch/x86/kernel/cpu/mtrr/if.c > +++ b/arch/x86/kernel/cpu/mtrr/if.c > @@ -4,8 +4,8 @@ > #include <linux/uaccess.h> > #include <linux/proc_fs.h> > #include <linux/ctype.h> > -#include <linux/string.h> > #include <linux/slab.h> > +#include <linux/string_helpers.h> > #include <linux/init.h> > > #define LINE_SIZE 80 > @@ -139,7 +139,7 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos) > return -EINVAL; > ptr = skip_spaces(ptr + 5); > > - i = match_string(mtrr_strings, MTRR_NUM_TYPES, ptr); > + i = match_string(mtrr_strings, ptr); > if (i < 0) > return i; > > diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c > index f0d4ff3c20a8..1139d9d1c89a 100644 > --- a/crypto/asymmetric_keys/pkcs7_verify.c > +++ b/crypto/asymmetric_keys/pkcs7_verify.c > @@ -141,8 +141,8 @@ int pkcs7_get_digest(struct pkcs7_message *pkcs7, const u8 **buf, u32 *len, > *buf = sinfo->sig->digest; > *len = sinfo->sig->digest_size; > > - i = match_string(hash_algo_name, HASH_ALGO__LAST, > - sinfo->sig->hash_algo); > + i = __match_string(hash_algo_name, HASH_ALGO__LAST, > + sinfo->sig->hash_algo); > if (i >= 0) > *hash_algo = i; > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index 503773707e01..9cb350de30f0 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -798,7 +798,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > if (!(info->valid & ACPI_VALID_HID)) > return false; > > - index = match_string(ids, -1, info->hardware_id.string); > + index = __match_string(ids, -1, info->hardware_id.string); > if (index >= 0) > return true; > > @@ -809,7 +809,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, > return false; > > for (i = 0; i < cid_list->count; i++) { > - index = match_string(ids, -1, cid_list->ids[i].string); > + index = __match_string(ids, -1, cid_list->ids[i].string); > if (index >= 0) > return true; > } > diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c > index bdccd1ba1524..8134f9290791 100644 > --- a/drivers/ata/pata_hpt366.c > +++ b/drivers/ata/pata_hpt366.c > @@ -178,7 +178,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", modestr, list[i]); > return 1; > diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c > index c0329cf01135..2d0b659bbd65 100644 > --- a/drivers/ata/pata_hpt37x.c > +++ b/drivers/ata/pata_hpt37x.c > @@ -226,7 +226,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, > > ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); > > - i = match_string(list, -1, model_num); > + i = __match_string(list, -1, model_num); > if (i >= 0) { > ata_dev_warn(dev, "%s is not supported for %s\n", > modestr, list[i]); > diff --git a/drivers/base/property.c b/drivers/base/property.c > index 837d77e3af2b..075c9dbd7aa5 100644 > --- a/drivers/base/property.c > +++ b/drivers/base/property.c > @@ -15,7 +15,7 @@ > #include <linux/property.h> > #include <linux/phy.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/types.h> > > struct fwnode_handle *__dev_fwnode(struct device *dev) > @@ -489,7 +489,7 @@ int fwnode_property_match_string(const struct fwnode_handle *fwnode, > if (ret < 0) > goto out_free; > > - ret = match_string(values, nval, string); > + ret = __match_string(values, nval, string); > if (ret < 0) > ret = -ENODATA; > > @@ -526,7 +526,7 @@ int fwnode_property_match_property_string(const struct fwnode_handle *fwnode, > if (ret) > return ret; > > - ret = match_string(array, n, string); > + ret = __match_string(array, n, string); > if (ret < 0) > ret = -ENOENT; > > diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c > index e12b531f5c2f..c7526eb1e963 100644 > --- a/drivers/char/ipmi/ipmi_msghandler.c > +++ b/drivers/char/ipmi/ipmi_msghandler.c > @@ -78,7 +78,7 @@ static int panic_op_write_handler(const char *val, > int e; > > strscpy(valcp, val, sizeof(valcp)); > - e = match_string(ipmi_panic_event_str, -1, strstrip(valcp)); > + e = __match_string(ipmi_panic_event_str, -1, strstrip(valcp)); > if (e < 0) > return e; > > diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c > index 0c92fa3eee88..4d3275374a53 100644 > --- a/drivers/char/ipmi/ipmi_si_hardcode.c > +++ b/drivers/char/ipmi/ipmi_si_hardcode.c > @@ -70,7 +70,7 @@ static void __init ipmi_hardcode_init_one(const char *si_type_str, > if (!si_type_str || !*si_type_str) { > p.type = SI_KCS; > } else { > - t = match_string(si_to_str, -1, si_type_str); > + t = __match_string(si_to_str, -1, si_type_str); > if (t < 0) { > pr_warn("Interface type specified for interface %d, was invalid: %s\n", > i, si_type_str); > diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c > index fb04734afc80..9446422d5fa8 100644 > --- a/drivers/clk/bcm/clk-bcm2835.c > +++ b/drivers/clk/bcm/clk-bcm2835.c > @@ -1447,9 +1447,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman, > for (i = 0; i < clock_data->num_mux_parents; i++) { > parents[i] = clock_data->parents[i]; > > - ret = match_string(cprman_parent_names, > - ARRAY_SIZE(cprman_parent_names), > - parents[i]); > + ret = match_string(cprman_parent_names, parents[i]); > if (ret >= 0) > parents[i] = cprman->real_parent_names[ret]; > } > diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c > index 73d2cbdc716b..30414d081f46 100644 > --- a/drivers/clk/rockchip/clk.c > +++ b/drivers/clk/rockchip/clk.c > @@ -266,8 +266,8 @@ static struct clk *rockchip_clk_register_frac_branch( > struct clk *mux_clk; > int ret; > > - frac->mux_frac_idx = match_string(child->parent_names, > - child->num_parents, name); > + frac->mux_frac_idx = __match_string(child->parent_names, > + child->num_parents, name); > frac->mux_ops = &clk_mux_ops; > frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb; > > diff --git a/drivers/clk/tegra/clk-tegra124-emc.c b/drivers/clk/tegra/clk-tegra124-emc.c > index 2a6db0434281..a2709ed60ee7 100644 > --- a/drivers/clk/tegra/clk-tegra124-emc.c > +++ b/drivers/clk/tegra/clk-tegra124-emc.c > @@ -20,7 +20,7 @@ > #include <linux/of_platform.h> > #include <linux/platform_device.h> > #include <linux/sort.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include <soc/tegra/fuse.h> > > @@ -413,13 +413,12 @@ static int load_one_timing_from_dt(struct tegra_clk_emc *tegra, > } > > timing->parent_index = 0xff; > - i = match_string(emc_parent_clk_names, ARRAY_SIZE(emc_parent_clk_names), > - __clk_get_name(timing->parent)); > + i = match_string(emc_parent_clk_names, __clk_get_name(timing->parent)); > if (i < 0) { > pr_err("timing %pOF: %s is not a valid parent\n", > node, __clk_get_name(timing->parent)); > clk_put(timing->parent); > - return -EINVAL; > + return i; > } > > timing->parent_index = i; > diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c > index 1b7e82a0ad2e..b6f52f44625f 100644 > --- a/drivers/cpufreq/amd-pstate.c > +++ b/drivers/cpufreq/amd-pstate.c > @@ -1117,9 +1117,9 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) > - return -EINVAL; > + return ret; > > mutex_lock(&amd_pstate_limits_lock); > ret = amd_pstate_set_energy_pref_index(cpudata, ret); > diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c > index 4b986c044741..1c2ee10415a2 100644 > --- a/drivers/cpufreq/intel_pstate.c > +++ b/drivers/cpufreq/intel_pstate.c > @@ -832,7 +832,7 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) { > if (!boot_cpu_has(X86_FEATURE_HWP_EPP)) > return ret; > diff --git a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > index 268052294468..4b8c45e8b164 100644 > --- a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > +++ b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c > @@ -3,7 +3,7 @@ > > #include <linux/export.h> > #include <linux/pci.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include "adf_cfg.h" > #include "adf_cfg_services.h" > #include "adf_cfg_strings.h" > @@ -35,8 +35,7 @@ int adf_get_service_enabled(struct adf_accel_dev *accel_dev) > return ret; > } > > - ret = match_string(adf_cfg_services, ARRAY_SIZE(adf_cfg_services), > - services); > + ret = match_string(adf_cfg_services, services); > if (ret < 0) > dev_err(&GET_DEV(accel_dev), > "Invalid value of " ADF_SERVICES_ENABLED " param: %s\n", > diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c > index aa93129c3397..624743caac4c 100644 > --- a/drivers/gpu/drm/drm_panel_orientation_quirks.c > +++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c > @@ -481,7 +481,7 @@ int drm_get_panel_orientation_quirk(int width, int height) > if (!bios_date) > continue; > > - i = match_string(data->bios_dates, -1, bios_date); > + i = __match_string(data->bios_dates, -1, bios_date); > if (i >= 0) > return data->orientation; > } > diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c > index 5a468ed6e26c..f9e7c66fd538 100644 > --- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c > +++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c > @@ -426,7 +426,7 @@ display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s) > return 0; > } > > - i = match_string(pipe_crc_sources, ARRAY_SIZE(pipe_crc_sources), buf); > + i = match_string(pipe_crc_sources, buf); Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> (I believe that the new _match_string(str1, size, str2) deserves a better name, but since I'm bad with naming stuff, I don't have any good suggestion) > if (i < 0) > return i; > > diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > index 670c9739e5e1..7fb9f5345654 100644 > --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c > @@ -645,8 +645,8 @@ static int nv17_tv_create_resources(struct drm_encoder *encoder, > int i; > > if (nouveau_tv_norm) { > - i = match_string(nv17_tv_norm_names, num_tv_norms, > - nouveau_tv_norm); > + i = __match_string(nv17_tv_norm_names, num_tv_norms, > + nouveau_tv_norm); > if (i < 0) > NV_WARN(drm, "Invalid TV norm setting \"%s\"\n", > nouveau_tv_norm); > diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c > index 5936b6b3b15d..ea35d283b2d2 100644 > --- a/drivers/gpu/drm/nouveau/dispnv50/crc.c > +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c > @@ -38,7 +38,7 @@ static int nv50_crc_parse_source(const char *buf, enum nv50_crc_source *s) > return 0; > } > > - i = match_string(nv50_crc_sources, ARRAY_SIZE(nv50_crc_sources), buf); > + i = match_string(nv50_crc_sources, buf); > if (i < 0) > return i; > > diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c > index 4f608a3790fb..3546f5a7e7bd 100644 > --- a/drivers/hwmon/ltc4282.c > +++ b/drivers/hwmon/ltc4282.c > @@ -21,7 +21,7 @@ > #include <linux/mutex.h> > #include <linux/regmap.h> > #include <linux/property.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/units.h> > #include <linux/util_macros.h> > > @@ -1282,8 +1282,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) > > ret = device_property_read_string(dev, "adi,gpio1-mode", &func); > if (!ret) { > - ret = match_string(ltc4282_gpio1_modes, > - ARRAY_SIZE(ltc4282_gpio1_modes), func); > + ret = match_string(ltc4282_gpio1_modes, func); > if (ret < 0) > return dev_err_probe(dev, ret, > "Invalid func(%s) for gpio1\n", > @@ -1298,8 +1297,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) > > ret = device_property_read_string(dev, "adi,gpio2-mode", &func); > if (!ret) { > - ret = match_string(ltc4282_gpio2_modes, > - ARRAY_SIZE(ltc4282_gpio2_modes), func); > + ret = match_string(ltc4282_gpio2_modes, func); > if (ret < 0) > return dev_err_probe(dev, ret, > "Invalid func(%s) for gpio2\n", > @@ -1463,8 +1461,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) > ret = device_property_read_string(dev, "adi,overvoltage-dividers", > ÷r); > if (!ret) { > - int div = match_string(ltc4282_dividers, > - ARRAY_SIZE(ltc4282_dividers), divider); > + int div = match_string(ltc4282_dividers, divider); > if (div < 0) > return dev_err_probe(dev, -EINVAL, > "Invalid val(%s) for adi,overvoltage-divider\n", > @@ -1478,8 +1475,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) > ret = device_property_read_string(dev, "adi,undervoltage-dividers", > ÷r); > if (!ret) { > - int div = match_string(ltc4282_dividers, > - ARRAY_SIZE(ltc4282_dividers), divider); > + int div = match_string(ltc4282_dividers, divider); > if (div < 0) > return dev_err_probe(dev, -EINVAL, > "Invalid val(%s) for adi,undervoltage-divider\n", > diff --git a/drivers/hwmon/nct6775-platform.c b/drivers/hwmon/nct6775-platform.c > index 9aa4dcf4a6f3..eb7eef9d2a76 100644 > --- a/drivers/hwmon/nct6775-platform.c > +++ b/drivers/hwmon/nct6775-platform.c > @@ -1514,13 +1514,11 @@ static int __init sensors_nct6775_platform_init(void) > > if (board_name && board_vendor && > !strcmp(board_vendor, "ASUSTeK COMPUTER INC.")) { > - err = match_string(asus_wmi_boards, ARRAY_SIZE(asus_wmi_boards), > - board_name); > + err = match_string(asus_wmi_boards, board_name); > if (err >= 0) > access = nct6775_determine_access(ASUSWMI_DEVICE_UID); > > - err = match_string(asus_msi_boards, ARRAY_SIZE(asus_msi_boards), > - board_name); > + err = match_string(asus_msi_boards, board_name); > if (err >= 0) > access = nct6775_determine_access(ASUSMSI_DEVICE_UID); > } > diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c > index be63d5b8f193..b083f1360111 100644 > --- a/drivers/hwtracing/intel_th/msu.c > +++ b/drivers/hwtracing/intel_th/msu.c > @@ -1901,7 +1901,7 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, > if (!mode) > return -ENOMEM; > > - i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode); > + i = match_string(msc_mode, mode); > if (i >= 0) { > kfree(mode); > goto found; > diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c > index d2d2a6dbe29f..0eccb636b2fe 100644 > --- a/drivers/i2c/busses/i2c-i801.c > +++ b/drivers/i2c/busses/i2c-i801.c > @@ -111,7 +111,7 @@ > #include <linux/io.h> > #include <linux/dmi.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/completion.h> > #include <linux/err.h> > #include <linux/platform_device.h> > @@ -1186,7 +1186,7 @@ static acpi_status check_acpi_smo88xx_device(acpi_handle obj_handle, > if (!hid) > goto smo88xx_not_found; > > - i = match_string(acpi_smo8800_ids, ARRAY_SIZE(acpi_smo8800_ids), hid); > + i = match_string(acpi_smo8800_ids, hid); > if (i < 0) > goto smo88xx_not_found; > > diff --git a/drivers/leds/leds-sun50i-a100.c b/drivers/leds/leds-sun50i-a100.c > index 119eff9471f0..4220f1f8a503 100644 > --- a/drivers/leds/leds-sun50i-a100.c > +++ b/drivers/leds/leds-sun50i-a100.c > @@ -256,7 +256,7 @@ static int sun50i_a100_ledc_parse_format(struct device *dev, > > device_property_read_string(dev, "allwinner,pixel-format", &format); > > - i = match_string(sun50i_a100_ledc_formats, ARRAY_SIZE(sun50i_a100_ledc_formats), format); > + i = match_string(sun50i_a100_ledc_formats, format); > if (i < 0) > return dev_err_probe(dev, i, "Bad pixel format '%s'\n", format); > > diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c > index 949feb03d4f8..06c208d8a992 100644 > --- a/drivers/mfd/omap-usb-host.c > +++ b/drivers/mfd/omap-usb-host.c > @@ -498,7 +498,7 @@ static int usbhs_omap_get_dt_pdata(struct device *dev, > continue; > > /* get 'enum usbhs_omap_port_mode' from port mode string */ > - ret = match_string(port_modes, ARRAY_SIZE(port_modes), mode); > + ret = match_string(port_modes, mode); > if (ret < 0) { > dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree\n", > i, mode); > diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c > index cc9d28b75eb9..1865e26ae736 100644 > --- a/drivers/mmc/host/sdhci-xenon-phy.c > +++ b/drivers/mmc/host/sdhci-xenon-phy.c > @@ -135,15 +135,14 @@ struct xenon_emmc_phy_regs { > u32 logic_timing_val; > }; > > -static const char * const phy_types[] = { > - "emmc 5.0 phy", > - "emmc 5.1 phy" > -}; > - > enum xenon_phy_type_enum { > EMMC_5_0_PHY, > EMMC_5_1_PHY, > - NR_PHY_TYPES > +}; > + > +static const char * const phy_types[] = { > + [EMMC_5_0_PHY] = "emmc 5.0 phy", > + [EMMC_5_1_PHY] = "emmc 5.1 phy", > }; > > enum soc_pad_ctrl_type { > @@ -852,7 +851,7 @@ static int xenon_add_phy(struct device *dev, struct sdhci_host *host, > struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host); > int ret; > > - priv->phy_type = match_string(phy_types, NR_PHY_TYPES, phy_name); > + priv->phy_type = match_string(phy_types, phy_name); > if (priv->phy_type < 0) { > dev_err(mmc_dev(host->mmc), > "Unable to determine PHY name %s. Use default eMMC 5.1 PHY\n", > diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c > index e229de32ff50..8b3fb2c72bd6 100644 > --- a/drivers/mtd/nand/raw/nand_macronix.c > +++ b/drivers/mtd/nand/raw/nand_macronix.c > @@ -178,8 +178,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) > if (!chip->parameters.supports_set_get_features) > return; > > - i = match_string(broken_get_timings, ARRAY_SIZE(broken_get_timings), > - chip->parameters.model); > + i = match_string(broken_get_timings, chip->parameters.model); > if (i < 0) > return; > > @@ -317,8 +316,7 @@ static void macronix_nand_deep_power_down_support(struct nand_chip *chip) > "MX30UF4G28AD", > }; > > - i = match_string(deep_power_down_dev, ARRAY_SIZE(deep_power_down_dev), > - chip->parameters.model); > + i = match_string(deep_power_down_dev, chip->parameters.model); > if (i < 0) > return; > > @@ -461,9 +459,7 @@ static void macronix_nand_setup_otp(struct nand_chip *chip) > }; > struct mtd_info *mtd; > > - if (match_string(supported_otp_models, > - ARRAY_SIZE(supported_otp_models), > - chip->parameters.model) < 0) > + if (match_string(supported_otp_models, chip->parameters.model) < 0) > return; > > if (!chip->parameters.supports_set_get_features) > diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > index 557c591a6ce3..cff23dc56641 100644 > --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c > @@ -4,7 +4,7 @@ > */ > > #include <linux/sort.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include "t4_regs.h" > #include "cxgb4.h" > @@ -1191,9 +1191,9 @@ static int cudbg_get_mem_region(struct adapter *padap, > if (rc) > return rc; > > - i = match_string(cudbg_region, ARRAY_SIZE(cudbg_region), region_name); > + i = match_string(cudbg_region, region_name); > if (i < 0) > - return -EINVAL; > + return i; > > idx = i; > for (i = 0; i < meminfo->mem_c; i++) { > diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > index 79f4ac8cbc72..58388ca9ecfa 100644 > --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c > @@ -724,7 +724,7 @@ iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf, > }; > int ret, bt_force_ant_mode; > > - ret = match_string(modes_str, ARRAY_SIZE(modes_str), buf); > + ret = match_string(modes_str, buf); > if (ret < 0) > return ret; > > diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c > index ac6293c24976..2d317c7e1cea 100644 > --- a/drivers/pci/pcie/aer.c > +++ b/drivers/pci/pcie/aer.c > @@ -210,7 +210,7 @@ void pcie_ecrc_get_policy(char *str) > { > int i; > > - i = match_string(ecrc_policy_str, ARRAY_SIZE(ecrc_policy_str), str); > + i = match_string(ecrc_policy_str, str); > if (i < 0) > return; > > diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c > index 25b86bbb9cec..762674acb7fc 100644 > --- a/drivers/phy/mediatek/phy-mtk-tphy.c > +++ b/drivers/phy/mediatek/phy-mtk-tphy.c > @@ -389,7 +389,7 @@ static int u2_phy_params_show(struct seq_file *sf, void *unused) > u32 val = 0; > int ret; > > - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); > + ret = match_string(u2_phy_files, fname); > if (ret < 0) > return ret; > > @@ -464,7 +464,7 @@ static ssize_t u2_phy_params_write(struct file *file, const char __user *ubuf, > if (rc) > return rc; > > - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); > + ret = match_string(u2_phy_files, fname); > if (ret < 0) > return (ssize_t)ret; > > @@ -530,7 +530,7 @@ static int u3_phy_params_show(struct seq_file *sf, void *unused) > u32 tmp; > int ret; > > - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); > + ret = match_string(u3_phy_files, fname); > if (ret < 0) > return ret; > > @@ -590,7 +590,7 @@ static ssize_t u3_phy_params_write(struct file *file, const char __user *ubuf, > if (rc) > return rc; > > - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); > + ret = match_string(u3_phy_files, fname); > if (ret < 0) > return (ssize_t)ret; > > diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c > index cfdb54b6070a..5fb8656aa31d 100644 > --- a/drivers/phy/tegra/xusb.c > +++ b/drivers/phy/tegra/xusb.c > @@ -123,7 +123,7 @@ int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane, > if (err < 0) > return err; > > - err = match_string(lane->soc->funcs, lane->soc->num_funcs, function); > + err = __match_string(lane->soc->funcs, lane->soc->num_funcs, function); > if (err < 0) { > dev_err(dev, "invalid function \"%s\" for lane \"%pOFn\"\n", > function, np); > @@ -748,7 +748,7 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2) > usb2->internal = of_property_read_bool(np, "nvidia,internal"); > > if (!of_property_read_string(np, "mode", &mode)) { > - int err = match_string(modes, ARRAY_SIZE(modes), mode); > + int err = match_string(modes, mode); > if (err < 0) { > dev_err(&port->dev, "invalid value %s for \"mode\"\n", > mode); > diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > index 4c4ada06423d..55b5464595b5 100644 > --- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > +++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c > @@ -352,7 +352,7 @@ static int armada_37xx_pmx_set_by_name(struct pinctrl_dev *pctldev, > > dev_dbg(dev, "enable function %s group %s\n", name, grp->name); > > - func = match_string(grp->funcs, NB_FUNCS, name); > + func = match_string(grp->funcs, name); > if (func < 0) > return -ENOTSUPP; > > @@ -885,7 +885,7 @@ static int armada_37xx_fill_group(struct armada_37xx_pinctrl *info) > for (j = 0; j < grp->extra_npins; j++) > grp->pins[i+j] = grp->extra_pin + j; > > - for (f = 0; (f < NB_FUNCS) && grp->funcs[f]; f++) { > + for (f = 0; (f < ARRAY_SIZE(grp->funcs)) && grp->funcs[f]; f++) { > int ret; > /* check for unique functions and count groups */ > ret = armada_37xx_add_function(info->funcs, &funcsize, > @@ -937,7 +937,7 @@ static int armada_37xx_fill_func(struct armada_37xx_pinctrl *info) > struct armada_37xx_pin_group *gp = &info->groups[g]; > int f; > > - f = match_string(gp->funcs, NB_FUNCS, name); > + f = match_string(gp->funcs, name); > if (f < 0) > continue; > > diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c > index addba55334d9..af2334b16b94 100644 > --- a/drivers/pinctrl/pinmux.c > +++ b/drivers/pinctrl/pinmux.c > @@ -23,7 +23,7 @@ > #include <linux/radix-tree.h> > #include <linux/seq_file.h> > #include <linux/slab.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #include <linux/pinctrl/machine.h> > #include <linux/pinctrl/pinctrl.h> > @@ -376,7 +376,7 @@ int pinmux_map_to_setting(const struct pinctrl_map *map, > } > if (map->data.mux.group) { > group = map->data.mux.group; > - ret = match_string(groups, num_groups, group); > + ret = __match_string(groups, num_groups, group); > if (ret < 0) { > dev_err(pctldev->dev, > "invalid group \"%s\" for function \"%s\"\n", > @@ -730,7 +730,7 @@ static ssize_t pinmux_select_write(struct file *file, const char __user *user_bu > goto exit_free_buf; > } > > - ret = match_string(groups, num_groups, gname); > + ret = __match_string(groups, num_groups, gname); > if (ret < 0) { > dev_err(pctldev->dev, "invalid group %s", gname); > goto exit_free_buf; > diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c > index 5fa553023842..ad7a9063c5d2 100644 > --- a/drivers/platform/x86/hp/hp-wmi.c > +++ b/drivers/platform/x86/hp/hp-wmi.c > @@ -25,7 +25,7 @@ > #include <linux/hwmon.h> > #include <linux/acpi.h> > #include <linux/rfkill.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/dmi.h> > > MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>"); > @@ -443,18 +443,15 @@ static int hp_wmi_get_tablet_mode(void) > { > char system_device_mode[4] = { 0 }; > const char *chassis_type; > - bool tablet_found; > int ret; > > chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); > if (!chassis_type) > return -ENODEV; > > - tablet_found = match_string(tablet_chassis_types, > - ARRAY_SIZE(tablet_chassis_types), > - chassis_type) >= 0; > - if (!tablet_found) > - return -ENODEV; > + ret = match_string(tablet_chassis_types, chassis_type); > + if (ret < 0) > + return ret; > > ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, > system_device_mode, zero_if_sup(system_device_mode), > @@ -490,9 +487,7 @@ static bool is_omen_thermal_profile(void) > if (!board_name) > return false; > > - return match_string(omen_thermal_profile_boards, > - ARRAY_SIZE(omen_thermal_profile_boards), > - board_name) >= 0; > + return match_string(omen_thermal_profile_boards, board_name) >= 0; > } > > static int omen_get_thermal_policy_version(void) > @@ -503,9 +498,9 @@ static int omen_get_thermal_policy_version(void) > const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); > > if (board_name) { > - int matches = match_string(omen_thermal_profile_force_v0_boards, > - ARRAY_SIZE(omen_thermal_profile_force_v0_boards), > - board_name); > + int matches; > + > + matches = match_string(omen_thermal_profile_force_v0_boards, board_name); > if (matches >= 0) > return 0; > } > @@ -1230,9 +1225,7 @@ static bool has_omen_thermal_profile_ec_timer(void) > if (!board_name) > return false; > > - return match_string(omen_timed_thermal_profile_boards, > - ARRAY_SIZE(omen_timed_thermal_profile_boards), > - board_name) >= 0; > + return match_string(omen_timed_thermal_profile_boards, board_name) >= 0; > } > > inline int omen_thermal_profile_ec_flags_set(enum hp_thermal_profile_omen_flags flags) > @@ -1376,9 +1369,7 @@ static bool is_victus_thermal_profile(void) > if (!board_name) > return false; > > - return match_string(victus_thermal_profile_boards, > - ARRAY_SIZE(victus_thermal_profile_boards), > - board_name) >= 0; > + return match_string(victus_thermal_profile_boards, board_name) >= 0; > } > > static int platform_profile_victus_get(struct platform_profile_handler *pprof, > diff --git a/drivers/platform/x86/msi-ec.c b/drivers/platform/x86/msi-ec.c > index f19504dbf164..a1b2dbb1a10f 100644 > --- a/drivers/platform/x86/msi-ec.c > +++ b/drivers/platform/x86/msi-ec.c > @@ -25,7 +25,7 @@ > #include <linux/module.h> > #include <linux/platform_device.h> > #include <linux/seq_file.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > > #define SM_ECO_NAME "eco" > #define SM_COMFORT_NAME "comfort" > @@ -1316,7 +1316,7 @@ static int __init load_configuration(void) > > /* load the suitable configuration, if exists */ > for (int i = 0; CONFIGS[i]; i++) { > - if (match_string(CONFIGS[i]->allowed_fw, -1, fw_version) != -EINVAL) { > + if (__match_string(CONFIGS[i]->allowed_fw, -1, fw_version) >= 0) { > conf = *CONFIGS[i]; > conf.allowed_fw = NULL; > return 0; > diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c > index 56f136b2d071..824c71965150 100644 > --- a/drivers/power/supply/ab8500_btemp.c > +++ b/drivers/power/supply/ab8500_btemp.c > @@ -556,7 +556,7 @@ static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data) > * For all psy where the name of your driver > * appears in any supplied_to > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c > index 55ab7a28056e..230a4efee210 100644 > --- a/drivers/power/supply/ab8500_chargalg.c > +++ b/drivers/power/supply/ab8500_chargalg.c > @@ -857,7 +857,7 @@ static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data) > psy = (struct power_supply *)data; > di = power_supply_get_drvdata(psy); > /* For all psy where the driver name appears in any supplied_to */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c > index 9b34d1a60f66..5eae14ca92fe 100644 > --- a/drivers/power/supply/ab8500_charger.c > +++ b/drivers/power/supply/ab8500_charger.c > @@ -1902,7 +1902,7 @@ static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) > * in practice what we will find will always be "ab8500_fg" as > * the fuel gauge is responsible of keeping track of VBAT. > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c > index 2ccaf6116c09..c3bc2833fc7e 100644 > --- a/drivers/power/supply/ab8500_fg.c > +++ b/drivers/power/supply/ab8500_fg.c > @@ -2197,7 +2197,7 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data) > * For all psy where the name of your driver > * appears in any supplied_to > */ > - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); > + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); > if (j < 0) > return 0; > > diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c > index 15c246d3b1a3..e87987a93860 100644 > --- a/drivers/staging/gdm724x/gdm_tty.c > +++ b/drivers/staging/gdm724x/gdm_tty.c > @@ -53,10 +53,9 @@ static int gdm_tty_install(struct tty_driver *driver, struct tty_struct *tty) > struct gdm *gdm = NULL; > int ret; > > - ret = match_string(DRIVER_STRING, TTY_MAX_COUNT, > - tty->driver->driver_name); > + ret = match_string(DRIVER_STRING, tty->driver->driver_name); > if (ret < 0) > - return -ENODEV; > + return ret; > > mutex_lock(&gdm_table_lock); > gdm = gdm_table[ret][tty->index]; > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > index e56db75a94fb..dbd176b0fb1f 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c > @@ -111,7 +111,7 @@ static ssize_t suffix##_show(struct device *dev,\ > match_strs = (const char **)fivr_strings;\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > reg_val = readl((void __iomem *) (proc_priv->mmio_base + mmio_regs[ret].offset));\ > @@ -145,7 +145,7 @@ static ssize_t suffix##_store(struct device *dev,\ > mmio_regs = tgl_fivr_mmio_regs;\ > } \ > \ > - ret = match_string(match_strs, -1, attr->attr.name);\ > + ret = __match_string(match_strs, -1, attr->attr.name);\ > if (ret < 0)\ > return ret;\ > if (mmio_regs[ret].read_only)\ > diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > index f298e7442662..57f456befb34 100644 > --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c > @@ -50,7 +50,7 @@ static ssize_t workload_type_store(struct device *dev, > if (ret != 1) > return -EINVAL; > > - ret = match_string(workload_types, -1, str_preference); > + ret = __match_string(workload_types, -1, str_preference); > if (ret < 0) > return ret; > > diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c > index b84efae26e15..657be0162dd9 100644 > --- a/drivers/usb/common/common.c > +++ b/drivers/usb/common/common.c > @@ -114,11 +114,11 @@ enum usb_device_speed usb_get_maximum_speed(struct device *dev) > if (ret < 0) > return USB_SPEED_UNKNOWN; > > - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); > + ret = match_string(ssp_rate, maximum_speed); > if (ret > 0) > return USB_SPEED_SUPER_PLUS; > > - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); > + ret = match_string(speed_names, maximum_speed); > return (ret < 0) ? USB_SPEED_UNKNOWN : ret; > } > EXPORT_SYMBOL_GPL(usb_get_maximum_speed); > @@ -141,7 +141,7 @@ enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev) > if (ret < 0) > return USB_SSP_GEN_UNKNOWN; > > - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); > + ret = match_string(ssp_rate, maximum_speed); > return (ret < 0) ? USB_SSP_GEN_UNKNOWN : ret; > } > EXPORT_SYMBOL_GPL(usb_get_maximum_ssp_rate); > @@ -184,7 +184,7 @@ static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str) > { > int ret; > > - ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str); > + ret = match_string(usb_dr_modes, str); > return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret; > } > > diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c > index 3cd6b184551c..90cee91f4ff9 100644 > --- a/drivers/usb/dwc3/dwc3-rtk.c > +++ b/drivers/usb/dwc3/dwc3-rtk.c > @@ -185,7 +185,7 @@ static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) > if (ret < 0) > goto out; > > - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); > + ret = match_string(speed_names, maximum_speed); > > out: > of_node_put(dwc3_np); > diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c > index 9610e647a8d4..7bc4695f8d0b 100644 > --- a/drivers/usb/typec/class.c > +++ b/drivers/usb/typec/class.c > @@ -1986,8 +1986,7 @@ EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); > */ > int typec_find_pwr_opmode(const char *name) > { > - return match_string(typec_pwr_opmodes, > - ARRAY_SIZE(typec_pwr_opmodes), name); > + return match_string(typec_pwr_opmodes, name); > } > EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); > > @@ -2001,8 +2000,7 @@ EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); > */ > int typec_find_orientation(const char *name) > { > - return match_string(typec_orientations, ARRAY_SIZE(typec_orientations), > - name); > + return match_string(typec_orientations, name); > } > EXPORT_SYMBOL_GPL(typec_find_orientation); > > @@ -2016,8 +2014,7 @@ EXPORT_SYMBOL_GPL(typec_find_orientation); > */ > int typec_find_port_power_role(const char *name) > { > - return match_string(typec_port_power_roles, > - ARRAY_SIZE(typec_port_power_roles), name); > + return match_string(typec_port_power_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_port_power_role); > > @@ -2031,7 +2028,7 @@ EXPORT_SYMBOL_GPL(typec_find_port_power_role); > */ > int typec_find_power_role(const char *name) > { > - return match_string(typec_roles, ARRAY_SIZE(typec_roles), name); > + return match_string(typec_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_power_role); > > @@ -2045,8 +2042,7 @@ EXPORT_SYMBOL_GPL(typec_find_power_role); > */ > int typec_find_port_data_role(const char *name) > { > - return match_string(typec_port_data_roles, > - ARRAY_SIZE(typec_port_data_roles), name); > + return match_string(typec_port_data_roles, name); > } > EXPORT_SYMBOL_GPL(typec_find_port_data_role); > > diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c > index ad76dbd20e65..2ce2d355a039 100644 > --- a/drivers/usb/typec/tipd/core.c > +++ b/drivers/usb/typec/tipd/core.c > @@ -722,8 +722,7 @@ static int tps6598x_check_mode(struct tps6598x *tps) > if (ret) > return ret; > > - ret = match_string(modes, ARRAY_SIZE(modes), mode); > - > + ret = match_string(modes, mode); > switch (ret) { > case TPS_MODE_APP: > case TPS_MODE_PTCH: > diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c > index 2ef56fa28aff..f1b562b94744 100644 > --- a/drivers/video/fbdev/pxafb.c > +++ b/drivers/video/fbdev/pxafb.c > @@ -37,9 +37,9 @@ > #include <linux/kernel.h> > #include <linux/sched.h> > #include <linux/errno.h> > -#include <linux/string.h> > #include <linux/interrupt.h> > #include <linux/slab.h> > +#include <linux/string_helpers.h> > #include <linux/mm.h> > #include <linux/fb.h> > #include <linux/delay.h> > @@ -2107,7 +2107,7 @@ static int of_get_pxafb_display(struct device *dev, struct device_node *disp, > if (ret) > s = "color-tft"; > > - i = match_string(lcd_types, -1, s); > + i = __match_string(lcd_types, -1, s); > if (i < 0) { > dev_err(dev, "lcd-type %s is unknown\n", s); > return i; > diff --git a/fs/bcachefs/compress.c b/fs/bcachefs/compress.c > index 1410365a8891..a62c5dd5b470 100644 > --- a/fs/bcachefs/compress.c > +++ b/fs/bcachefs/compress.c > @@ -667,7 +667,7 @@ int bch2_opt_compression_parse(struct bch_fs *c, const char *_val, u64 *res, > type_str = strsep(&p, ":"); > level_str = p; > > - ret = match_string(bch2_compression_opts, -1, type_str); > + ret = __match_string(bch2_compression_opts, -1, type_str); > if (ret < 0 && err) > prt_str(err, "invalid compression type"); > if (ret < 0) > diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c > index bb068fd72465..cbe4e820419f 100644 > --- a/fs/bcachefs/opts.c > +++ b/fs/bcachefs/opts.c > @@ -122,7 +122,7 @@ static int bch2_opt_fix_errors_parse(struct bch_fs *c, const char *val, u64 *res > if (!val) { > *res = FSCK_FIX_yes; > } else { > - int ret = match_string(bch2_fsck_fix_opts, -1, val); > + int ret = __match_string(bch2_fsck_fix_opts, -1, val); > > if (ret < 0 && err) > prt_str(err, "fix_errors: invalid selection"); > @@ -366,7 +366,7 @@ int bch2_opt_parse(struct bch_fs *c, > return -EINVAL; > } > > - ret = match_string(opt->choices, -1, val); > + ret = __match_string(opt->choices, -1, val); > if (ret < 0) { > if (err) > prt_printf(err, "%s: invalid selection", > diff --git a/fs/bcachefs/util.c b/fs/bcachefs/util.c > index de331dec2a99..8cef641a38fb 100644 > --- a/fs/bcachefs/util.c > +++ b/fs/bcachefs/util.c > @@ -19,7 +19,7 @@ > #include <linux/preempt.h> > #include <linux/random.h> > #include <linux/seq_file.h> > -#include <linux/string.h> > +#include <linux/string_helpers.h> > #include <linux/types.h> > #include <linux/sched/clock.h> > > @@ -215,7 +215,7 @@ u64 bch2_read_flag_list(char *opt, const char * const list[]) > s = strim(d); > > while ((p = strsep(&s, ","))) { > - int flag = match_string(list, -1, p); > + int flag = __match_string(list, -1, p); > > if (flag < 0) { > ret = -1; > diff --git a/fs/ubifs/auth.c b/fs/ubifs/auth.c > index a4a0158f712d..fc0da18bfa65 100644 > --- a/fs/ubifs/auth.c > +++ b/fs/ubifs/auth.c > @@ -264,13 +264,13 @@ int ubifs_init_authentication(struct ubifs_info *c) > return -EINVAL; > } > > - c->auth_hash_algo = match_string(hash_algo_name, HASH_ALGO__LAST, > - c->auth_hash_name); > - if ((int)c->auth_hash_algo < 0) { > + err = __match_string(hash_algo_name, HASH_ALGO__LAST, c->auth_hash_name); > + if (err < 0) { > ubifs_err(c, "Unknown hash algo %s specified", > c->auth_hash_name); > - return -EINVAL; > + return err; > } > + c->auth_hash_algo = err; > > snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", > c->auth_hash_name); > diff --git a/include/linux/string.h b/include/linux/string.h > index 60168aa2af07..92fc7631f6a4 100644 > --- a/include/linux/string.h > +++ b/include/linux/string.h > @@ -303,8 +303,18 @@ extern unsigned long long memparse(const char *ptr, char **retptr); > extern bool parse_option_str(const char *str, const char *option); > extern char *next_arg(char *args, char **param, char **val); > > +int __match_string(const char * const *array, size_t n, const char *string); > + > +/** > + * match_string - matches given string in an array > + * @_a: array of strings > + * @_s: string to match with > + * > + * Helper for __match_string(). Calculates the size of @a automatically. > + */ > +#define match_string(_a, _s) __match_string(_a, ARRAY_SIZE(_a), _s) > + > extern bool sysfs_streq(const char *s1, const char *s2); > -int match_string(const char * const *array, size_t n, const char *string); > int __sysfs_match_string(const char * const *array, size_t n, const char *s); > > /** > diff --git a/kernel/cgroup/rdma.c b/kernel/cgroup/rdma.c > index ef5878fb2005..10105cfc5981 100644 > --- a/kernel/cgroup/rdma.c > +++ b/kernel/cgroup/rdma.c > @@ -366,7 +366,7 @@ static int parse_resource(char *c, int *intval) > if (!name || !value) > return -EINVAL; > > - i = match_string(rdmacg_resource_names, RDMACG_RESOURCE_MAX, name); > + i = match_string(rdmacg_resource_names, name); > if (i < 0) > return i; > > diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c > index c1eb9a1afd13..b6238341e3c0 100644 > --- a/kernel/sched/debug.c > +++ b/kernel/sched/debug.c > @@ -105,7 +105,7 @@ static int sched_feat_set(char *cmp) > cmp += 3; > } > > - i = match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); > + i = __match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); > if (i < 0) > return i; > > diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c > index 578a49ff5c32..13c0a1fa30cd 100644 > --- a/kernel/trace/trace.c > +++ b/kernel/trace/trace.c > @@ -32,7 +32,6 @@ > #include <linux/percpu.h> > #include <linux/splice.h> > #include <linux/kdebug.h> > -#include <linux/string.h> > #include <linux/mount.h> > #include <linux/rwsem.h> > #include <linux/slab.h> > @@ -45,6 +44,7 @@ > #include <linux/trace.h> > #include <linux/sched/clock.h> > #include <linux/sched/rt.h> > +#include <linux/string_helpers.h> > #include <linux/fsnotify.h> > #include <linux/irq_work.h> > #include <linux/workqueue.h> > @@ -5309,7 +5309,7 @@ int trace_set_options(struct trace_array *tr, char *option) > mutex_lock(&event_mutex); > mutex_lock(&trace_types_lock); > > - ret = match_string(trace_options, -1, cmp); > + ret = __match_string(trace_options, -1, cmp); > /* If no option could be set, test the specific tracer options */ > if (ret < 0) > ret = set_tracer_option(tr, cmp, neg); > diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c > index a8e28f9b9271..7bed499effd3 100644 > --- a/kernel/trace/trace_osnoise.c > +++ b/kernel/trace/trace_osnoise.c > @@ -2230,9 +2230,9 @@ static ssize_t osnoise_options_write(struct file *filp, const char __user *ubuf, > enable = false; > } > > - option = match_string(osnoise_options_str, OSN_MAX, option_str); > + option = match_string(osnoise_options_str, option_str); > if (option < 0) > - return -EINVAL; > + return option; > > /* > * trace_types_lock is taken to avoid concurrency on start/stop. > diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c > index f2c5e7910bb1..cd4fbcea38ba 100644 > --- a/lib/dynamic_debug.c > +++ b/lib/dynamic_debug.c > @@ -24,7 +24,6 @@ > #include <linux/list.h> > #include <linux/sysctl.h> > #include <linux/ctype.h> > -#include <linux/string.h> > #include <linux/parser.h> > #include <linux/string_helpers.h> > #include <linux/uaccess.h> > @@ -154,7 +153,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons > int idx; > > list_for_each_entry(map, &dt->maps, link) { > - idx = match_string(map->class_names, map->length, class_string); > + idx = __match_string(map->class_names, map->length, class_string); > if (idx >= 0) { > *class_id = idx + map->base; > return map; > @@ -665,7 +664,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa > if (*cl_str == '+') > cl_str++; > } > - cls_id = match_string(map->class_names, map->length, cl_str); > + cls_id = __match_string(map->class_names, map->length, cl_str); > if (cls_id < 0) { > pr_err("%s unknown to %s\n", cl_str, KP_NAME(kp)); > continue; > diff --git a/lib/string_helpers.c b/lib/string_helpers.c > index 69ba49b853c7..d3d0d2154146 100644 > --- a/lib/string_helpers.c > +++ b/lib/string_helpers.c > @@ -898,7 +898,7 @@ bool sysfs_streq(const char *s1, const char *s2) > EXPORT_SYMBOL(sysfs_streq); > > /** > - * match_string - matches given string in an array > + * __match_string - matches given string in an array > * @array: array of strings > * @n: number of strings in the array or -1 for NULL terminated arrays > * @string: string to match with > @@ -914,7 +914,7 @@ EXPORT_SYMBOL(sysfs_streq); > * Return: > * index of a @string in the @array if matches, or %-EINVAL otherwise. > */ > -int match_string(const char * const *array, size_t n, const char *string) > +int __match_string(const char * const *array, size_t n, const char *string) > { > int index; > const char *item; > @@ -929,7 +929,7 @@ int match_string(const char * const *array, size_t n, const char *string) > > return -EINVAL; > } > -EXPORT_SYMBOL(match_string); > +EXPORT_SYMBOL(__match_string); > > /** > * __sysfs_match_string - matches given string in an array > diff --git a/mm/mempolicy.c b/mm/mempolicy.c > index aec756ae5637..89c132170431 100644 > --- a/mm/mempolicy.c > +++ b/mm/mempolicy.c > @@ -89,7 +89,6 @@ > #include <linux/nodemask.h> > #include <linux/cpuset.h> > #include <linux/slab.h> > -#include <linux/string.h> > #include <linux/export.h> > #include <linux/nsproxy.h> > #include <linux/interrupt.h> > @@ -103,6 +102,7 @@ > #include <linux/ksm.h> > #include <linux/rmap.h> > #include <linux/security.h> > +#include <linux/string_helpers.h> > #include <linux/syscalls.h> > #include <linux/ctype.h> > #include <linux/mm_inline.h> > @@ -3183,7 +3183,7 @@ int mpol_parse_str(char *str, struct mempolicy **mpol) > } else > nodes_clear(nodes); > > - mode = match_string(policy_modes, MPOL_MAX, str); > + mode = match_string(policy_modes, str); > if (mode < 0) > goto out; > > diff --git a/mm/vmpressure.c b/mm/vmpressure.c > index bd5183dfd879..eaaa133ce12b 100644 > --- a/mm/vmpressure.c > +++ b/mm/vmpressure.c > @@ -388,7 +388,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > > /* Find required level */ > token = strsep(&spec, ","); > - ret = match_string(vmpressure_str_levels, VMPRESSURE_NUM_LEVELS, token); > + ret = match_string(vmpressure_str_levels, token); > if (ret < 0) > goto out; > level = ret; > @@ -396,7 +396,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, > /* Find optional mode */ > token = strsep(&spec, ","); > if (token) { > - ret = match_string(vmpressure_str_modes, VMPRESSURE_NUM_MODES, token); > + ret = match_string(vmpressure_str_modes, token); > if (ret < 0) > goto out; > mode = ret; > diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c > index 6239777090c4..e3fc94b4c7e5 100644 > --- a/security/apparmor/lsm.c > +++ b/security/apparmor/lsm.c > @@ -1820,9 +1820,9 @@ static int param_set_audit(const char *val, const struct kernel_param *kp) > if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) > return -EPERM; > > - i = match_string(audit_mode_names, AUDIT_MAX_INDEX, val); > + i = __match_string(audit_mode_names, AUDIT_MAX_INDEX, val); > if (i < 0) > - return -EINVAL; > + return i; > > aa_g_audit = i; > return 0; > @@ -1849,10 +1849,9 @@ static int param_set_mode(const char *val, const struct kernel_param *kp) > if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) > return -EPERM; > > - i = match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, > - val); > + i = __match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, val); > if (i < 0) > - return -EINVAL; > + return i; > > aa_g_profile_mode = i; > return 0; > diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c > index f04f43af651c..49d6e9cc3387 100644 > --- a/security/integrity/ima/ima_main.c > +++ b/security/integrity/ima/ima_main.c > @@ -64,7 +64,7 @@ static int __init hash_setup(char *str) > goto out; > } > > - i = match_string(hash_algo_name, HASH_ALGO__LAST, str); > + i = __match_string(hash_algo_name, HASH_ALGO__LAST, str); > if (i < 0) { > pr_err("invalid hash algorithm \"%s\"", str); > return 1; > diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c > index c0556907c2e6..fa67c5794071 100644 > --- a/security/integrity/ima/ima_policy.c > +++ b/security/integrity/ima/ima_policy.c > @@ -1380,7 +1380,7 @@ static unsigned int ima_parse_appraise_algos(char *arg) > char *token; > > while ((token = strsep(&arg, ",")) != NULL) { > - idx = match_string(hash_algo_name, HASH_ALGO__LAST, token); > + idx = __match_string(hash_algo_name, HASH_ALGO__LAST, token); > > if (idx < 0) { > pr_err("unknown hash algorithm \"%s\"", > diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c > index 98ae0e8cba87..5b38069daa0a 100644 > --- a/sound/firewire/oxfw/oxfw.c > +++ b/sound/firewire/oxfw/oxfw.c > @@ -59,7 +59,7 @@ static bool detect_loud_models(struct fw_unit *unit) > if (err < 0) > return false; > > - return match_string(models, ARRAY_SIZE(models), model) >= 0; > + return match_string(models, model) >= 0; > } > > static int name_card(struct snd_oxfw *oxfw, const struct ieee1394_device_id *entry) > diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c > index eb3aca16359c..73e15d5d6be9 100644 > --- a/sound/pci/oxygen/oxygen_mixer.c > +++ b/sound/pci/oxygen/oxygen_mixer.c > @@ -1074,7 +1074,7 @@ static int add_controls(struct oxygen *chip, > err = snd_ctl_add(chip->card, ctl); > if (err < 0) > return err; > - j = match_string(known_ctl_names, CONTROL_COUNT, ctl->id.name); > + j = match_string(known_ctl_names, ctl->id.name); > if (j >= 0) { > chip->controls[j] = ctl; > ctl->private_free = oxygen_any_ctl_free; > diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c > index 8b56ee550c09..4736a4ba0e1f 100644 > --- a/sound/soc/codecs/max98088.c > +++ b/sound/soc/codecs/max98088.c > @@ -1414,7 +1414,7 @@ static int max98088_get_channel(struct snd_soc_component *component, const char > { > int ret; > > - ret = match_string(eq_mode_name, ARRAY_SIZE(eq_mode_name), name); > + ret = match_string(eq_mode_name, name); > if (ret < 0) > dev_err(component->dev, "Bad EQ channel name '%s'\n", name); > return ret; > diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c > index 7e525d49328d..430bce3333a9 100644 > --- a/sound/soc/codecs/max98095.c > +++ b/sound/soc/codecs/max98095.c > @@ -1627,7 +1627,7 @@ static int max98095_get_bq_channel(struct snd_soc_component *component, > { > int ret; > > - ret = match_string(bq_mode_name, ARRAY_SIZE(bq_mode_name), name); > + ret = match_string(bq_mode_name, name); > if (ret < 0) > dev_err(component->dev, "Bad biquad channel name '%s'\n", name); > return ret; > diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c > index 16dad4a45443..7064f4cae549 100644 > --- a/sound/soc/soc-dapm.c > +++ b/sound/soc/soc-dapm.c > @@ -769,14 +769,13 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, > item = 0; > } > > - i = match_string(e->texts, e->items, control_name); > + i = __match_string(e->texts, e->items, control_name); > if (i < 0) > - return -ENODEV; > + return i; > > path->name = e->texts[i]; > path->connect = (i == item); > return 0; > - > } > > /* set up initial codec paths */ > -- > 2.43.0.rc1.1336.g36b5255a03ac >
On Tue, 4 Jun 2024 at 11:25, Rodrigo Vivi <rodrigo.vivi@intel.com> wrote: > > (I believe that the new _match_string(str1, size, str2) deserves a better name, > but since I'm bad with naming stuff, I don't have any good suggestion) I hated the enormous cc list, so I didn't reply to all. But clearly everybody else is just doing so. Anyway, here's my NAK for this patch with explanation: https://lore.kernel.org/all/CAHk-=wg5F99-GZPETsasJd0JB0JGcdmmPeHRxCtT4_i83h8avg@mail.gmail.com/ and part of it was the naming, but there were other oddities there too. Linus
On Sun, Jun 02, 2024 at 06:57:12PM +0300, Andy Shevchenko wrote: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c > index 1b7e82a0ad2e..b6f52f44625f 100644 > --- a/drivers/cpufreq/amd-pstate.c > +++ b/drivers/cpufreq/amd-pstate.c > @@ -1117,9 +1117,9 @@ static ssize_t store_energy_performance_preference( > if (ret != 1) > return -EINVAL; > > - ret = match_string(energy_perf_strings, -1, str_preference); > + ret = __match_string(energy_perf_strings, -1, str_preference); > if (ret < 0) > - return -EINVAL; > + return ret; > > mutex_lock(&amd_pstate_limits_lock); > ret = amd_pstate_set_energy_pref_index(cpudata, ret); For drivers/cpufreq/amd-pstate.c Acked-by: Gautham R. Shenoy <gautham.shenoy@amd.com> -- Thanks and Regards gautham.
Il 02/06/24 17:57, Andy Shevchenko ha scritto: > Make two APIs look similar. Hence convert match_string() to be > a 2-argument macro. In order to avoid unneeded churn, convert > all users as well. There is no functional change intended. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> For MediaTek Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
On Tue, Jun 4, 2024 at 9:46 AM Jani Nikula <jani.nikula@linux.intel.com> wrote: [Maybe slightly off-topic, ranty] > Why do we think it's a good idea to increase and normalize the use of > double-underscore function names across the kernel, like > __match_string() in this case? It should mean "reserved for the > implementation, not to be called directly". > > If it's to be used directly, it should be named accordingly, right? It's a huge mess. "__" prefix is just so ambiguous I think it just shouldn't be used or prolifierated, and it usually breaks Rusty Russells API rules times over. Consider __set_bit() from <linux/bitops.h>, used all over the place, in contrast with set_bit() for example, what does "__" represent in this context that makes __set_bit() different from set_bit()? It means "non-atomic"... How does a random contributor know this? Yeah, you guess it. By the token of "everybody knows that". (Grep, google, repeat for the number of contributors to the kernel.) I was considering to send a script to Torvalds to just change all this to set_bit_nonatomic() (etc) but was hesitating because that makes the name unambiguous but long. I think I stayed off it because changing stuff like that all over the place creates churn and churn is bad. Yours, Linus Walleij
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index bd4813bad317..f479cc62674a 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -3478,8 +3478,7 @@ skipbl(void) return c; } -#define N_PTREGS 44 -static const char *regnames[N_PTREGS] = { +static const char *regnames[] = { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", @@ -3514,7 +3513,7 @@ scanhex(unsigned long *vp) regname[i] = c; } regname[i] = 0; - i = match_string(regnames, N_PTREGS, regname); + i = match_string(regnames, regname); if (i < 0) { printf("invalid register name '%%%s'\n", regname); return 0; diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c index a5c506f6da7f..9b749b848123 100644 --- a/arch/x86/kernel/cpu/mtrr/if.c +++ b/arch/x86/kernel/cpu/mtrr/if.c @@ -4,8 +4,8 @@ #include <linux/uaccess.h> #include <linux/proc_fs.h> #include <linux/ctype.h> -#include <linux/string.h> #include <linux/slab.h> +#include <linux/string_helpers.h> #include <linux/init.h> #define LINE_SIZE 80 @@ -139,7 +139,7 @@ mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos) return -EINVAL; ptr = skip_spaces(ptr + 5); - i = match_string(mtrr_strings, MTRR_NUM_TYPES, ptr); + i = match_string(mtrr_strings, ptr); if (i < 0) return i; diff --git a/crypto/asymmetric_keys/pkcs7_verify.c b/crypto/asymmetric_keys/pkcs7_verify.c index f0d4ff3c20a8..1139d9d1c89a 100644 --- a/crypto/asymmetric_keys/pkcs7_verify.c +++ b/crypto/asymmetric_keys/pkcs7_verify.c @@ -141,8 +141,8 @@ int pkcs7_get_digest(struct pkcs7_message *pkcs7, const u8 **buf, u32 *len, *buf = sinfo->sig->digest; *len = sinfo->sig->digest_size; - i = match_string(hash_algo_name, HASH_ALGO__LAST, - sinfo->sig->hash_algo); + i = __match_string(hash_algo_name, HASH_ALGO__LAST, + sinfo->sig->hash_algo); if (i >= 0) *hash_algo = i; diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 503773707e01..9cb350de30f0 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -798,7 +798,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, if (!(info->valid & ACPI_VALID_HID)) return false; - index = match_string(ids, -1, info->hardware_id.string); + index = __match_string(ids, -1, info->hardware_id.string); if (index >= 0) return true; @@ -809,7 +809,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, return false; for (i = 0; i < cid_list->count; i++) { - index = match_string(ids, -1, cid_list->ids[i].string); + index = __match_string(ids, -1, cid_list->ids[i].string); if (index >= 0) return true; } diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c index bdccd1ba1524..8134f9290791 100644 --- a/drivers/ata/pata_hpt366.c +++ b/drivers/ata/pata_hpt366.c @@ -178,7 +178,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); - i = match_string(list, -1, model_num); + i = __match_string(list, -1, model_num); if (i >= 0) { ata_dev_warn(dev, "%s is not supported for %s\n", modestr, list[i]); return 1; diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index c0329cf01135..2d0b659bbd65 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -226,7 +226,7 @@ static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); - i = match_string(list, -1, model_num); + i = __match_string(list, -1, model_num); if (i >= 0) { ata_dev_warn(dev, "%s is not supported for %s\n", modestr, list[i]); diff --git a/drivers/base/property.c b/drivers/base/property.c index 837d77e3af2b..075c9dbd7aa5 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -15,7 +15,7 @@ #include <linux/property.h> #include <linux/phy.h> #include <linux/slab.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/types.h> struct fwnode_handle *__dev_fwnode(struct device *dev) @@ -489,7 +489,7 @@ int fwnode_property_match_string(const struct fwnode_handle *fwnode, if (ret < 0) goto out_free; - ret = match_string(values, nval, string); + ret = __match_string(values, nval, string); if (ret < 0) ret = -ENODATA; @@ -526,7 +526,7 @@ int fwnode_property_match_property_string(const struct fwnode_handle *fwnode, if (ret) return ret; - ret = match_string(array, n, string); + ret = __match_string(array, n, string); if (ret < 0) ret = -ENOENT; diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index e12b531f5c2f..c7526eb1e963 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -78,7 +78,7 @@ static int panic_op_write_handler(const char *val, int e; strscpy(valcp, val, sizeof(valcp)); - e = match_string(ipmi_panic_event_str, -1, strstrip(valcp)); + e = __match_string(ipmi_panic_event_str, -1, strstrip(valcp)); if (e < 0) return e; diff --git a/drivers/char/ipmi/ipmi_si_hardcode.c b/drivers/char/ipmi/ipmi_si_hardcode.c index 0c92fa3eee88..4d3275374a53 100644 --- a/drivers/char/ipmi/ipmi_si_hardcode.c +++ b/drivers/char/ipmi/ipmi_si_hardcode.c @@ -70,7 +70,7 @@ static void __init ipmi_hardcode_init_one(const char *si_type_str, if (!si_type_str || !*si_type_str) { p.type = SI_KCS; } else { - t = match_string(si_to_str, -1, si_type_str); + t = __match_string(si_to_str, -1, si_type_str); if (t < 0) { pr_warn("Interface type specified for interface %d, was invalid: %s\n", i, si_type_str); diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index fb04734afc80..9446422d5fa8 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1447,9 +1447,7 @@ static struct clk_hw *bcm2835_register_clock(struct bcm2835_cprman *cprman, for (i = 0; i < clock_data->num_mux_parents; i++) { parents[i] = clock_data->parents[i]; - ret = match_string(cprman_parent_names, - ARRAY_SIZE(cprman_parent_names), - parents[i]); + ret = match_string(cprman_parent_names, parents[i]); if (ret >= 0) parents[i] = cprman->real_parent_names[ret]; } diff --git a/drivers/clk/rockchip/clk.c b/drivers/clk/rockchip/clk.c index 73d2cbdc716b..30414d081f46 100644 --- a/drivers/clk/rockchip/clk.c +++ b/drivers/clk/rockchip/clk.c @@ -266,8 +266,8 @@ static struct clk *rockchip_clk_register_frac_branch( struct clk *mux_clk; int ret; - frac->mux_frac_idx = match_string(child->parent_names, - child->num_parents, name); + frac->mux_frac_idx = __match_string(child->parent_names, + child->num_parents, name); frac->mux_ops = &clk_mux_ops; frac->clk_nb.notifier_call = rockchip_clk_frac_notifier_cb; diff --git a/drivers/clk/tegra/clk-tegra124-emc.c b/drivers/clk/tegra/clk-tegra124-emc.c index 2a6db0434281..a2709ed60ee7 100644 --- a/drivers/clk/tegra/clk-tegra124-emc.c +++ b/drivers/clk/tegra/clk-tegra124-emc.c @@ -20,7 +20,7 @@ #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/sort.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <soc/tegra/fuse.h> @@ -413,13 +413,12 @@ static int load_one_timing_from_dt(struct tegra_clk_emc *tegra, } timing->parent_index = 0xff; - i = match_string(emc_parent_clk_names, ARRAY_SIZE(emc_parent_clk_names), - __clk_get_name(timing->parent)); + i = match_string(emc_parent_clk_names, __clk_get_name(timing->parent)); if (i < 0) { pr_err("timing %pOF: %s is not a valid parent\n", node, __clk_get_name(timing->parent)); clk_put(timing->parent); - return -EINVAL; + return i; } timing->parent_index = i; diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 1b7e82a0ad2e..b6f52f44625f 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -1117,9 +1117,9 @@ static ssize_t store_energy_performance_preference( if (ret != 1) return -EINVAL; - ret = match_string(energy_perf_strings, -1, str_preference); + ret = __match_string(energy_perf_strings, -1, str_preference); if (ret < 0) - return -EINVAL; + return ret; mutex_lock(&amd_pstate_limits_lock); ret = amd_pstate_set_energy_pref_index(cpudata, ret); diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 4b986c044741..1c2ee10415a2 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -832,7 +832,7 @@ static ssize_t store_energy_performance_preference( if (ret != 1) return -EINVAL; - ret = match_string(energy_perf_strings, -1, str_preference); + ret = __match_string(energy_perf_strings, -1, str_preference); if (ret < 0) { if (!boot_cpu_has(X86_FEATURE_HWP_EPP)) return ret; diff --git a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c index 268052294468..4b8c45e8b164 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c +++ b/drivers/crypto/intel/qat/qat_common/adf_cfg_services.c @@ -3,7 +3,7 @@ #include <linux/export.h> #include <linux/pci.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include "adf_cfg.h" #include "adf_cfg_services.h" #include "adf_cfg_strings.h" @@ -35,8 +35,7 @@ int adf_get_service_enabled(struct adf_accel_dev *accel_dev) return ret; } - ret = match_string(adf_cfg_services, ARRAY_SIZE(adf_cfg_services), - services); + ret = match_string(adf_cfg_services, services); if (ret < 0) dev_err(&GET_DEV(accel_dev), "Invalid value of " ADF_SERVICES_ENABLED " param: %s\n", diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c index aa93129c3397..624743caac4c 100644 --- a/drivers/gpu/drm/drm_panel_orientation_quirks.c +++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c @@ -481,7 +481,7 @@ int drm_get_panel_orientation_quirk(int width, int height) if (!bios_date) continue; - i = match_string(data->bios_dates, -1, bios_date); + i = __match_string(data->bios_dates, -1, bios_date); if (i >= 0) return data->orientation; } diff --git a/drivers/gpu/drm/i915/display/intel_pipe_crc.c b/drivers/gpu/drm/i915/display/intel_pipe_crc.c index 5a468ed6e26c..f9e7c66fd538 100644 --- a/drivers/gpu/drm/i915/display/intel_pipe_crc.c +++ b/drivers/gpu/drm/i915/display/intel_pipe_crc.c @@ -426,7 +426,7 @@ display_crc_ctl_parse_source(const char *buf, enum intel_pipe_crc_source *s) return 0; } - i = match_string(pipe_crc_sources, ARRAY_SIZE(pipe_crc_sources), buf); + i = match_string(pipe_crc_sources, buf); if (i < 0) return i; diff --git a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c index 670c9739e5e1..7fb9f5345654 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c +++ b/drivers/gpu/drm/nouveau/dispnv04/tvnv17.c @@ -645,8 +645,8 @@ static int nv17_tv_create_resources(struct drm_encoder *encoder, int i; if (nouveau_tv_norm) { - i = match_string(nv17_tv_norm_names, num_tv_norms, - nouveau_tv_norm); + i = __match_string(nv17_tv_norm_names, num_tv_norms, + nouveau_tv_norm); if (i < 0) NV_WARN(drm, "Invalid TV norm setting \"%s\"\n", nouveau_tv_norm); diff --git a/drivers/gpu/drm/nouveau/dispnv50/crc.c b/drivers/gpu/drm/nouveau/dispnv50/crc.c index 5936b6b3b15d..ea35d283b2d2 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/crc.c +++ b/drivers/gpu/drm/nouveau/dispnv50/crc.c @@ -38,7 +38,7 @@ static int nv50_crc_parse_source(const char *buf, enum nv50_crc_source *s) return 0; } - i = match_string(nv50_crc_sources, ARRAY_SIZE(nv50_crc_sources), buf); + i = match_string(nv50_crc_sources, buf); if (i < 0) return i; diff --git a/drivers/hwmon/ltc4282.c b/drivers/hwmon/ltc4282.c index 4f608a3790fb..3546f5a7e7bd 100644 --- a/drivers/hwmon/ltc4282.c +++ b/drivers/hwmon/ltc4282.c @@ -21,7 +21,7 @@ #include <linux/mutex.h> #include <linux/regmap.h> #include <linux/property.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/units.h> #include <linux/util_macros.h> @@ -1282,8 +1282,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) ret = device_property_read_string(dev, "adi,gpio1-mode", &func); if (!ret) { - ret = match_string(ltc4282_gpio1_modes, - ARRAY_SIZE(ltc4282_gpio1_modes), func); + ret = match_string(ltc4282_gpio1_modes, func); if (ret < 0) return dev_err_probe(dev, ret, "Invalid func(%s) for gpio1\n", @@ -1298,8 +1297,7 @@ static int ltc4282_gpio_setup(struct ltc4282_state *st, struct device *dev) ret = device_property_read_string(dev, "adi,gpio2-mode", &func); if (!ret) { - ret = match_string(ltc4282_gpio2_modes, - ARRAY_SIZE(ltc4282_gpio2_modes), func); + ret = match_string(ltc4282_gpio2_modes, func); if (ret < 0) return dev_err_probe(dev, ret, "Invalid func(%s) for gpio2\n", @@ -1463,8 +1461,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) ret = device_property_read_string(dev, "adi,overvoltage-dividers", ÷r); if (!ret) { - int div = match_string(ltc4282_dividers, - ARRAY_SIZE(ltc4282_dividers), divider); + int div = match_string(ltc4282_dividers, divider); if (div < 0) return dev_err_probe(dev, -EINVAL, "Invalid val(%s) for adi,overvoltage-divider\n", @@ -1478,8 +1475,7 @@ static int ltc4282_setup(struct ltc4282_state *st, struct device *dev) ret = device_property_read_string(dev, "adi,undervoltage-dividers", ÷r); if (!ret) { - int div = match_string(ltc4282_dividers, - ARRAY_SIZE(ltc4282_dividers), divider); + int div = match_string(ltc4282_dividers, divider); if (div < 0) return dev_err_probe(dev, -EINVAL, "Invalid val(%s) for adi,undervoltage-divider\n", diff --git a/drivers/hwmon/nct6775-platform.c b/drivers/hwmon/nct6775-platform.c index 9aa4dcf4a6f3..eb7eef9d2a76 100644 --- a/drivers/hwmon/nct6775-platform.c +++ b/drivers/hwmon/nct6775-platform.c @@ -1514,13 +1514,11 @@ static int __init sensors_nct6775_platform_init(void) if (board_name && board_vendor && !strcmp(board_vendor, "ASUSTeK COMPUTER INC.")) { - err = match_string(asus_wmi_boards, ARRAY_SIZE(asus_wmi_boards), - board_name); + err = match_string(asus_wmi_boards, board_name); if (err >= 0) access = nct6775_determine_access(ASUSWMI_DEVICE_UID); - err = match_string(asus_msi_boards, ARRAY_SIZE(asus_msi_boards), - board_name); + err = match_string(asus_msi_boards, board_name); if (err >= 0) access = nct6775_determine_access(ASUSMSI_DEVICE_UID); } diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index be63d5b8f193..b083f1360111 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -1901,7 +1901,7 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, if (!mode) return -ENOMEM; - i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode); + i = match_string(msc_mode, mode); if (i >= 0) { kfree(mode); goto found; diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index d2d2a6dbe29f..0eccb636b2fe 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -111,7 +111,7 @@ #include <linux/io.h> #include <linux/dmi.h> #include <linux/slab.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/completion.h> #include <linux/err.h> #include <linux/platform_device.h> @@ -1186,7 +1186,7 @@ static acpi_status check_acpi_smo88xx_device(acpi_handle obj_handle, if (!hid) goto smo88xx_not_found; - i = match_string(acpi_smo8800_ids, ARRAY_SIZE(acpi_smo8800_ids), hid); + i = match_string(acpi_smo8800_ids, hid); if (i < 0) goto smo88xx_not_found; diff --git a/drivers/leds/leds-sun50i-a100.c b/drivers/leds/leds-sun50i-a100.c index 119eff9471f0..4220f1f8a503 100644 --- a/drivers/leds/leds-sun50i-a100.c +++ b/drivers/leds/leds-sun50i-a100.c @@ -256,7 +256,7 @@ static int sun50i_a100_ledc_parse_format(struct device *dev, device_property_read_string(dev, "allwinner,pixel-format", &format); - i = match_string(sun50i_a100_ledc_formats, ARRAY_SIZE(sun50i_a100_ledc_formats), format); + i = match_string(sun50i_a100_ledc_formats, format); if (i < 0) return dev_err_probe(dev, i, "Bad pixel format '%s'\n", format); diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 949feb03d4f8..06c208d8a992 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -498,7 +498,7 @@ static int usbhs_omap_get_dt_pdata(struct device *dev, continue; /* get 'enum usbhs_omap_port_mode' from port mode string */ - ret = match_string(port_modes, ARRAY_SIZE(port_modes), mode); + ret = match_string(port_modes, mode); if (ret < 0) { dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree\n", i, mode); diff --git a/drivers/mmc/host/sdhci-xenon-phy.c b/drivers/mmc/host/sdhci-xenon-phy.c index cc9d28b75eb9..1865e26ae736 100644 --- a/drivers/mmc/host/sdhci-xenon-phy.c +++ b/drivers/mmc/host/sdhci-xenon-phy.c @@ -135,15 +135,14 @@ struct xenon_emmc_phy_regs { u32 logic_timing_val; }; -static const char * const phy_types[] = { - "emmc 5.0 phy", - "emmc 5.1 phy" -}; - enum xenon_phy_type_enum { EMMC_5_0_PHY, EMMC_5_1_PHY, - NR_PHY_TYPES +}; + +static const char * const phy_types[] = { + [EMMC_5_0_PHY] = "emmc 5.0 phy", + [EMMC_5_1_PHY] = "emmc 5.1 phy", }; enum soc_pad_ctrl_type { @@ -852,7 +851,7 @@ static int xenon_add_phy(struct device *dev, struct sdhci_host *host, struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host); int ret; - priv->phy_type = match_string(phy_types, NR_PHY_TYPES, phy_name); + priv->phy_type = match_string(phy_types, phy_name); if (priv->phy_type < 0) { dev_err(mmc_dev(host->mmc), "Unable to determine PHY name %s. Use default eMMC 5.1 PHY\n", diff --git a/drivers/mtd/nand/raw/nand_macronix.c b/drivers/mtd/nand/raw/nand_macronix.c index e229de32ff50..8b3fb2c72bd6 100644 --- a/drivers/mtd/nand/raw/nand_macronix.c +++ b/drivers/mtd/nand/raw/nand_macronix.c @@ -178,8 +178,7 @@ static void macronix_nand_fix_broken_get_timings(struct nand_chip *chip) if (!chip->parameters.supports_set_get_features) return; - i = match_string(broken_get_timings, ARRAY_SIZE(broken_get_timings), - chip->parameters.model); + i = match_string(broken_get_timings, chip->parameters.model); if (i < 0) return; @@ -317,8 +316,7 @@ static void macronix_nand_deep_power_down_support(struct nand_chip *chip) "MX30UF4G28AD", }; - i = match_string(deep_power_down_dev, ARRAY_SIZE(deep_power_down_dev), - chip->parameters.model); + i = match_string(deep_power_down_dev, chip->parameters.model); if (i < 0) return; @@ -461,9 +459,7 @@ static void macronix_nand_setup_otp(struct nand_chip *chip) }; struct mtd_info *mtd; - if (match_string(supported_otp_models, - ARRAY_SIZE(supported_otp_models), - chip->parameters.model) < 0) + if (match_string(supported_otp_models, chip->parameters.model) < 0) return; if (!chip->parameters.supports_set_get_features) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c index 557c591a6ce3..cff23dc56641 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c @@ -4,7 +4,7 @@ */ #include <linux/sort.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include "t4_regs.h" #include "cxgb4.h" @@ -1191,9 +1191,9 @@ static int cudbg_get_mem_region(struct adapter *padap, if (rc) return rc; - i = match_string(cudbg_region, ARRAY_SIZE(cudbg_region), region_name); + i = match_string(cudbg_region, region_name); if (i < 0) - return -EINVAL; + return i; idx = i; for (i = 0; i < meminfo->mem_c; i++) { diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index 79f4ac8cbc72..58388ca9ecfa 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -724,7 +724,7 @@ iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf, }; int ret, bt_force_ant_mode; - ret = match_string(modes_str, ARRAY_SIZE(modes_str), buf); + ret = match_string(modes_str, buf); if (ret < 0) return ret; diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index ac6293c24976..2d317c7e1cea 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -210,7 +210,7 @@ void pcie_ecrc_get_policy(char *str) { int i; - i = match_string(ecrc_policy_str, ARRAY_SIZE(ecrc_policy_str), str); + i = match_string(ecrc_policy_str, str); if (i < 0) return; diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 25b86bbb9cec..762674acb7fc 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -389,7 +389,7 @@ static int u2_phy_params_show(struct seq_file *sf, void *unused) u32 val = 0; int ret; - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); + ret = match_string(u2_phy_files, fname); if (ret < 0) return ret; @@ -464,7 +464,7 @@ static ssize_t u2_phy_params_write(struct file *file, const char __user *ubuf, if (rc) return rc; - ret = match_string(u2_phy_files, ARRAY_SIZE(u2_phy_files), fname); + ret = match_string(u2_phy_files, fname); if (ret < 0) return (ssize_t)ret; @@ -530,7 +530,7 @@ static int u3_phy_params_show(struct seq_file *sf, void *unused) u32 tmp; int ret; - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); + ret = match_string(u3_phy_files, fname); if (ret < 0) return ret; @@ -590,7 +590,7 @@ static ssize_t u3_phy_params_write(struct file *file, const char __user *ubuf, if (rc) return rc; - ret = match_string(u3_phy_files, ARRAY_SIZE(u3_phy_files), fname); + ret = match_string(u3_phy_files, fname); if (ret < 0) return (ssize_t)ret; diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index cfdb54b6070a..5fb8656aa31d 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -123,7 +123,7 @@ int tegra_xusb_lane_parse_dt(struct tegra_xusb_lane *lane, if (err < 0) return err; - err = match_string(lane->soc->funcs, lane->soc->num_funcs, function); + err = __match_string(lane->soc->funcs, lane->soc->num_funcs, function); if (err < 0) { dev_err(dev, "invalid function \"%s\" for lane \"%pOFn\"\n", function, np); @@ -748,7 +748,7 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2) usb2->internal = of_property_read_bool(np, "nvidia,internal"); if (!of_property_read_string(np, "mode", &mode)) { - int err = match_string(modes, ARRAY_SIZE(modes), mode); + int err = match_string(modes, mode); if (err < 0) { dev_err(&port->dev, "invalid value %s for \"mode\"\n", mode); diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c index 4c4ada06423d..55b5464595b5 100644 --- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c +++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c @@ -352,7 +352,7 @@ static int armada_37xx_pmx_set_by_name(struct pinctrl_dev *pctldev, dev_dbg(dev, "enable function %s group %s\n", name, grp->name); - func = match_string(grp->funcs, NB_FUNCS, name); + func = match_string(grp->funcs, name); if (func < 0) return -ENOTSUPP; @@ -885,7 +885,7 @@ static int armada_37xx_fill_group(struct armada_37xx_pinctrl *info) for (j = 0; j < grp->extra_npins; j++) grp->pins[i+j] = grp->extra_pin + j; - for (f = 0; (f < NB_FUNCS) && grp->funcs[f]; f++) { + for (f = 0; (f < ARRAY_SIZE(grp->funcs)) && grp->funcs[f]; f++) { int ret; /* check for unique functions and count groups */ ret = armada_37xx_add_function(info->funcs, &funcsize, @@ -937,7 +937,7 @@ static int armada_37xx_fill_func(struct armada_37xx_pinctrl *info) struct armada_37xx_pin_group *gp = &info->groups[g]; int f; - f = match_string(gp->funcs, NB_FUNCS, name); + f = match_string(gp->funcs, name); if (f < 0) continue; diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c index addba55334d9..af2334b16b94 100644 --- a/drivers/pinctrl/pinmux.c +++ b/drivers/pinctrl/pinmux.c @@ -23,7 +23,7 @@ #include <linux/radix-tree.h> #include <linux/seq_file.h> #include <linux/slab.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/pinctrl/machine.h> #include <linux/pinctrl/pinctrl.h> @@ -376,7 +376,7 @@ int pinmux_map_to_setting(const struct pinctrl_map *map, } if (map->data.mux.group) { group = map->data.mux.group; - ret = match_string(groups, num_groups, group); + ret = __match_string(groups, num_groups, group); if (ret < 0) { dev_err(pctldev->dev, "invalid group \"%s\" for function \"%s\"\n", @@ -730,7 +730,7 @@ static ssize_t pinmux_select_write(struct file *file, const char __user *user_bu goto exit_free_buf; } - ret = match_string(groups, num_groups, gname); + ret = __match_string(groups, num_groups, gname); if (ret < 0) { dev_err(pctldev->dev, "invalid group %s", gname); goto exit_free_buf; diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c index 5fa553023842..ad7a9063c5d2 100644 --- a/drivers/platform/x86/hp/hp-wmi.c +++ b/drivers/platform/x86/hp/hp-wmi.c @@ -25,7 +25,7 @@ #include <linux/hwmon.h> #include <linux/acpi.h> #include <linux/rfkill.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/dmi.h> MODULE_AUTHOR("Matthew Garrett <mjg59@srcf.ucam.org>"); @@ -443,18 +443,15 @@ static int hp_wmi_get_tablet_mode(void) { char system_device_mode[4] = { 0 }; const char *chassis_type; - bool tablet_found; int ret; chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); if (!chassis_type) return -ENODEV; - tablet_found = match_string(tablet_chassis_types, - ARRAY_SIZE(tablet_chassis_types), - chassis_type) >= 0; - if (!tablet_found) - return -ENODEV; + ret = match_string(tablet_chassis_types, chassis_type); + if (ret < 0) + return ret; ret = hp_wmi_perform_query(HPWMI_SYSTEM_DEVICE_MODE, HPWMI_READ, system_device_mode, zero_if_sup(system_device_mode), @@ -490,9 +487,7 @@ static bool is_omen_thermal_profile(void) if (!board_name) return false; - return match_string(omen_thermal_profile_boards, - ARRAY_SIZE(omen_thermal_profile_boards), - board_name) >= 0; + return match_string(omen_thermal_profile_boards, board_name) >= 0; } static int omen_get_thermal_policy_version(void) @@ -503,9 +498,9 @@ static int omen_get_thermal_policy_version(void) const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); if (board_name) { - int matches = match_string(omen_thermal_profile_force_v0_boards, - ARRAY_SIZE(omen_thermal_profile_force_v0_boards), - board_name); + int matches; + + matches = match_string(omen_thermal_profile_force_v0_boards, board_name); if (matches >= 0) return 0; } @@ -1230,9 +1225,7 @@ static bool has_omen_thermal_profile_ec_timer(void) if (!board_name) return false; - return match_string(omen_timed_thermal_profile_boards, - ARRAY_SIZE(omen_timed_thermal_profile_boards), - board_name) >= 0; + return match_string(omen_timed_thermal_profile_boards, board_name) >= 0; } inline int omen_thermal_profile_ec_flags_set(enum hp_thermal_profile_omen_flags flags) @@ -1376,9 +1369,7 @@ static bool is_victus_thermal_profile(void) if (!board_name) return false; - return match_string(victus_thermal_profile_boards, - ARRAY_SIZE(victus_thermal_profile_boards), - board_name) >= 0; + return match_string(victus_thermal_profile_boards, board_name) >= 0; } static int platform_profile_victus_get(struct platform_profile_handler *pprof, diff --git a/drivers/platform/x86/msi-ec.c b/drivers/platform/x86/msi-ec.c index f19504dbf164..a1b2dbb1a10f 100644 --- a/drivers/platform/x86/msi-ec.c +++ b/drivers/platform/x86/msi-ec.c @@ -25,7 +25,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/seq_file.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #define SM_ECO_NAME "eco" #define SM_COMFORT_NAME "comfort" @@ -1316,7 +1316,7 @@ static int __init load_configuration(void) /* load the suitable configuration, if exists */ for (int i = 0; CONFIGS[i]; i++) { - if (match_string(CONFIGS[i]->allowed_fw, -1, fw_version) != -EINVAL) { + if (__match_string(CONFIGS[i]->allowed_fw, -1, fw_version) >= 0) { conf = *CONFIGS[i]; conf.allowed_fw = NULL; return 0; diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c index 56f136b2d071..824c71965150 100644 --- a/drivers/power/supply/ab8500_btemp.c +++ b/drivers/power/supply/ab8500_btemp.c @@ -556,7 +556,7 @@ static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data) * For all psy where the name of your driver * appears in any supplied_to */ - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); if (j < 0) return 0; diff --git a/drivers/power/supply/ab8500_chargalg.c b/drivers/power/supply/ab8500_chargalg.c index 55ab7a28056e..230a4efee210 100644 --- a/drivers/power/supply/ab8500_chargalg.c +++ b/drivers/power/supply/ab8500_chargalg.c @@ -857,7 +857,7 @@ static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data) psy = (struct power_supply *)data; di = power_supply_get_drvdata(psy); /* For all psy where the driver name appears in any supplied_to */ - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); if (j < 0) return 0; diff --git a/drivers/power/supply/ab8500_charger.c b/drivers/power/supply/ab8500_charger.c index 9b34d1a60f66..5eae14ca92fe 100644 --- a/drivers/power/supply/ab8500_charger.c +++ b/drivers/power/supply/ab8500_charger.c @@ -1902,7 +1902,7 @@ static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data) * in practice what we will find will always be "ab8500_fg" as * the fuel gauge is responsible of keeping track of VBAT. */ - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); if (j < 0) return 0; diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c index 2ccaf6116c09..c3bc2833fc7e 100644 --- a/drivers/power/supply/ab8500_fg.c +++ b/drivers/power/supply/ab8500_fg.c @@ -2197,7 +2197,7 @@ static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data) * For all psy where the name of your driver * appears in any supplied_to */ - j = match_string(supplicants, ext->num_supplicants, psy->desc->name); + j = __match_string(supplicants, ext->num_supplicants, psy->desc->name); if (j < 0) return 0; diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c index 15c246d3b1a3..e87987a93860 100644 --- a/drivers/staging/gdm724x/gdm_tty.c +++ b/drivers/staging/gdm724x/gdm_tty.c @@ -53,10 +53,9 @@ static int gdm_tty_install(struct tty_driver *driver, struct tty_struct *tty) struct gdm *gdm = NULL; int ret; - ret = match_string(DRIVER_STRING, TTY_MAX_COUNT, - tty->driver->driver_name); + ret = match_string(DRIVER_STRING, tty->driver->driver_name); if (ret < 0) - return -ENODEV; + return ret; mutex_lock(&gdm_table_lock); gdm = gdm_table[ret][tty->index]; diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c index e56db75a94fb..dbd176b0fb1f 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_rfim.c @@ -111,7 +111,7 @@ static ssize_t suffix##_show(struct device *dev,\ match_strs = (const char **)fivr_strings;\ mmio_regs = tgl_fivr_mmio_regs;\ } \ - ret = match_string(match_strs, -1, attr->attr.name);\ + ret = __match_string(match_strs, -1, attr->attr.name);\ if (ret < 0)\ return ret;\ reg_val = readl((void __iomem *) (proc_priv->mmio_base + mmio_regs[ret].offset));\ @@ -145,7 +145,7 @@ static ssize_t suffix##_store(struct device *dev,\ mmio_regs = tgl_fivr_mmio_regs;\ } \ \ - ret = match_string(match_strs, -1, attr->attr.name);\ + ret = __match_string(match_strs, -1, attr->attr.name);\ if (ret < 0)\ return ret;\ if (mmio_regs[ret].read_only)\ diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c index f298e7442662..57f456befb34 100644 --- a/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c +++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_wt_req.c @@ -50,7 +50,7 @@ static ssize_t workload_type_store(struct device *dev, if (ret != 1) return -EINVAL; - ret = match_string(workload_types, -1, str_preference); + ret = __match_string(workload_types, -1, str_preference); if (ret < 0) return ret; diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index b84efae26e15..657be0162dd9 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -114,11 +114,11 @@ enum usb_device_speed usb_get_maximum_speed(struct device *dev) if (ret < 0) return USB_SPEED_UNKNOWN; - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); + ret = match_string(ssp_rate, maximum_speed); if (ret > 0) return USB_SPEED_SUPER_PLUS; - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); + ret = match_string(speed_names, maximum_speed); return (ret < 0) ? USB_SPEED_UNKNOWN : ret; } EXPORT_SYMBOL_GPL(usb_get_maximum_speed); @@ -141,7 +141,7 @@ enum usb_ssp_rate usb_get_maximum_ssp_rate(struct device *dev) if (ret < 0) return USB_SSP_GEN_UNKNOWN; - ret = match_string(ssp_rate, ARRAY_SIZE(ssp_rate), maximum_speed); + ret = match_string(ssp_rate, maximum_speed); return (ret < 0) ? USB_SSP_GEN_UNKNOWN : ret; } EXPORT_SYMBOL_GPL(usb_get_maximum_ssp_rate); @@ -184,7 +184,7 @@ static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str) { int ret; - ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str); + ret = match_string(usb_dr_modes, str); return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret; } diff --git a/drivers/usb/dwc3/dwc3-rtk.c b/drivers/usb/dwc3/dwc3-rtk.c index 3cd6b184551c..90cee91f4ff9 100644 --- a/drivers/usb/dwc3/dwc3-rtk.c +++ b/drivers/usb/dwc3/dwc3-rtk.c @@ -185,7 +185,7 @@ static enum usb_device_speed __get_dwc3_maximum_speed(struct device_node *np) if (ret < 0) goto out; - ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); + ret = match_string(speed_names, maximum_speed); out: of_node_put(dwc3_np); diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 9610e647a8d4..7bc4695f8d0b 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1986,8 +1986,7 @@ EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); */ int typec_find_pwr_opmode(const char *name) { - return match_string(typec_pwr_opmodes, - ARRAY_SIZE(typec_pwr_opmodes), name); + return match_string(typec_pwr_opmodes, name); } EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); @@ -2001,8 +2000,7 @@ EXPORT_SYMBOL_GPL(typec_find_pwr_opmode); */ int typec_find_orientation(const char *name) { - return match_string(typec_orientations, ARRAY_SIZE(typec_orientations), - name); + return match_string(typec_orientations, name); } EXPORT_SYMBOL_GPL(typec_find_orientation); @@ -2016,8 +2014,7 @@ EXPORT_SYMBOL_GPL(typec_find_orientation); */ int typec_find_port_power_role(const char *name) { - return match_string(typec_port_power_roles, - ARRAY_SIZE(typec_port_power_roles), name); + return match_string(typec_port_power_roles, name); } EXPORT_SYMBOL_GPL(typec_find_port_power_role); @@ -2031,7 +2028,7 @@ EXPORT_SYMBOL_GPL(typec_find_port_power_role); */ int typec_find_power_role(const char *name) { - return match_string(typec_roles, ARRAY_SIZE(typec_roles), name); + return match_string(typec_roles, name); } EXPORT_SYMBOL_GPL(typec_find_power_role); @@ -2045,8 +2042,7 @@ EXPORT_SYMBOL_GPL(typec_find_power_role); */ int typec_find_port_data_role(const char *name) { - return match_string(typec_port_data_roles, - ARRAY_SIZE(typec_port_data_roles), name); + return match_string(typec_port_data_roles, name); } EXPORT_SYMBOL_GPL(typec_find_port_data_role); diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c index ad76dbd20e65..2ce2d355a039 100644 --- a/drivers/usb/typec/tipd/core.c +++ b/drivers/usb/typec/tipd/core.c @@ -722,8 +722,7 @@ static int tps6598x_check_mode(struct tps6598x *tps) if (ret) return ret; - ret = match_string(modes, ARRAY_SIZE(modes), mode); - + ret = match_string(modes, mode); switch (ret) { case TPS_MODE_APP: case TPS_MODE_PTCH: diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c index 2ef56fa28aff..f1b562b94744 100644 --- a/drivers/video/fbdev/pxafb.c +++ b/drivers/video/fbdev/pxafb.c @@ -37,9 +37,9 @@ #include <linux/kernel.h> #include <linux/sched.h> #include <linux/errno.h> -#include <linux/string.h> #include <linux/interrupt.h> #include <linux/slab.h> +#include <linux/string_helpers.h> #include <linux/mm.h> #include <linux/fb.h> #include <linux/delay.h> @@ -2107,7 +2107,7 @@ static int of_get_pxafb_display(struct device *dev, struct device_node *disp, if (ret) s = "color-tft"; - i = match_string(lcd_types, -1, s); + i = __match_string(lcd_types, -1, s); if (i < 0) { dev_err(dev, "lcd-type %s is unknown\n", s); return i; diff --git a/fs/bcachefs/compress.c b/fs/bcachefs/compress.c index 1410365a8891..a62c5dd5b470 100644 --- a/fs/bcachefs/compress.c +++ b/fs/bcachefs/compress.c @@ -667,7 +667,7 @@ int bch2_opt_compression_parse(struct bch_fs *c, const char *_val, u64 *res, type_str = strsep(&p, ":"); level_str = p; - ret = match_string(bch2_compression_opts, -1, type_str); + ret = __match_string(bch2_compression_opts, -1, type_str); if (ret < 0 && err) prt_str(err, "invalid compression type"); if (ret < 0) diff --git a/fs/bcachefs/opts.c b/fs/bcachefs/opts.c index bb068fd72465..cbe4e820419f 100644 --- a/fs/bcachefs/opts.c +++ b/fs/bcachefs/opts.c @@ -122,7 +122,7 @@ static int bch2_opt_fix_errors_parse(struct bch_fs *c, const char *val, u64 *res if (!val) { *res = FSCK_FIX_yes; } else { - int ret = match_string(bch2_fsck_fix_opts, -1, val); + int ret = __match_string(bch2_fsck_fix_opts, -1, val); if (ret < 0 && err) prt_str(err, "fix_errors: invalid selection"); @@ -366,7 +366,7 @@ int bch2_opt_parse(struct bch_fs *c, return -EINVAL; } - ret = match_string(opt->choices, -1, val); + ret = __match_string(opt->choices, -1, val); if (ret < 0) { if (err) prt_printf(err, "%s: invalid selection", diff --git a/fs/bcachefs/util.c b/fs/bcachefs/util.c index de331dec2a99..8cef641a38fb 100644 --- a/fs/bcachefs/util.c +++ b/fs/bcachefs/util.c @@ -19,7 +19,7 @@ #include <linux/preempt.h> #include <linux/random.h> #include <linux/seq_file.h> -#include <linux/string.h> +#include <linux/string_helpers.h> #include <linux/types.h> #include <linux/sched/clock.h> @@ -215,7 +215,7 @@ u64 bch2_read_flag_list(char *opt, const char * const list[]) s = strim(d); while ((p = strsep(&s, ","))) { - int flag = match_string(list, -1, p); + int flag = __match_string(list, -1, p); if (flag < 0) { ret = -1; diff --git a/fs/ubifs/auth.c b/fs/ubifs/auth.c index a4a0158f712d..fc0da18bfa65 100644 --- a/fs/ubifs/auth.c +++ b/fs/ubifs/auth.c @@ -264,13 +264,13 @@ int ubifs_init_authentication(struct ubifs_info *c) return -EINVAL; } - c->auth_hash_algo = match_string(hash_algo_name, HASH_ALGO__LAST, - c->auth_hash_name); - if ((int)c->auth_hash_algo < 0) { + err = __match_string(hash_algo_name, HASH_ALGO__LAST, c->auth_hash_name); + if (err < 0) { ubifs_err(c, "Unknown hash algo %s specified", c->auth_hash_name); - return -EINVAL; + return err; } + c->auth_hash_algo = err; snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", c->auth_hash_name); diff --git a/include/linux/string.h b/include/linux/string.h index 60168aa2af07..92fc7631f6a4 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -303,8 +303,18 @@ extern unsigned long long memparse(const char *ptr, char **retptr); extern bool parse_option_str(const char *str, const char *option); extern char *next_arg(char *args, char **param, char **val); +int __match_string(const char * const *array, size_t n, const char *string); + +/** + * match_string - matches given string in an array + * @_a: array of strings + * @_s: string to match with + * + * Helper for __match_string(). Calculates the size of @a automatically. + */ +#define match_string(_a, _s) __match_string(_a, ARRAY_SIZE(_a), _s) + extern bool sysfs_streq(const char *s1, const char *s2); -int match_string(const char * const *array, size_t n, const char *string); int __sysfs_match_string(const char * const *array, size_t n, const char *s); /** diff --git a/kernel/cgroup/rdma.c b/kernel/cgroup/rdma.c index ef5878fb2005..10105cfc5981 100644 --- a/kernel/cgroup/rdma.c +++ b/kernel/cgroup/rdma.c @@ -366,7 +366,7 @@ static int parse_resource(char *c, int *intval) if (!name || !value) return -EINVAL; - i = match_string(rdmacg_resource_names, RDMACG_RESOURCE_MAX, name); + i = match_string(rdmacg_resource_names, name); if (i < 0) return i; diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c index c1eb9a1afd13..b6238341e3c0 100644 --- a/kernel/sched/debug.c +++ b/kernel/sched/debug.c @@ -105,7 +105,7 @@ static int sched_feat_set(char *cmp) cmp += 3; } - i = match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); + i = __match_string(sched_feat_names, __SCHED_FEAT_NR, cmp); if (i < 0) return i; diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 578a49ff5c32..13c0a1fa30cd 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -32,7 +32,6 @@ #include <linux/percpu.h> #include <linux/splice.h> #include <linux/kdebug.h> -#include <linux/string.h> #include <linux/mount.h> #include <linux/rwsem.h> #include <linux/slab.h> @@ -45,6 +44,7 @@ #include <linux/trace.h> #include <linux/sched/clock.h> #include <linux/sched/rt.h> +#include <linux/string_helpers.h> #include <linux/fsnotify.h> #include <linux/irq_work.h> #include <linux/workqueue.h> @@ -5309,7 +5309,7 @@ int trace_set_options(struct trace_array *tr, char *option) mutex_lock(&event_mutex); mutex_lock(&trace_types_lock); - ret = match_string(trace_options, -1, cmp); + ret = __match_string(trace_options, -1, cmp); /* If no option could be set, test the specific tracer options */ if (ret < 0) ret = set_tracer_option(tr, cmp, neg); diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index a8e28f9b9271..7bed499effd3 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -2230,9 +2230,9 @@ static ssize_t osnoise_options_write(struct file *filp, const char __user *ubuf, enable = false; } - option = match_string(osnoise_options_str, OSN_MAX, option_str); + option = match_string(osnoise_options_str, option_str); if (option < 0) - return -EINVAL; + return option; /* * trace_types_lock is taken to avoid concurrency on start/stop. diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index f2c5e7910bb1..cd4fbcea38ba 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -24,7 +24,6 @@ #include <linux/list.h> #include <linux/sysctl.h> #include <linux/ctype.h> -#include <linux/string.h> #include <linux/parser.h> #include <linux/string_helpers.h> #include <linux/uaccess.h> @@ -154,7 +153,7 @@ static struct ddebug_class_map *ddebug_find_valid_class(struct ddebug_table cons int idx; list_for_each_entry(map, &dt->maps, link) { - idx = match_string(map->class_names, map->length, class_string); + idx = __match_string(map->class_names, map->length, class_string); if (idx >= 0) { *class_id = idx + map->base; return map; @@ -665,7 +664,7 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa if (*cl_str == '+') cl_str++; } - cls_id = match_string(map->class_names, map->length, cl_str); + cls_id = __match_string(map->class_names, map->length, cl_str); if (cls_id < 0) { pr_err("%s unknown to %s\n", cl_str, KP_NAME(kp)); continue; diff --git a/lib/string_helpers.c b/lib/string_helpers.c index 69ba49b853c7..d3d0d2154146 100644 --- a/lib/string_helpers.c +++ b/lib/string_helpers.c @@ -898,7 +898,7 @@ bool sysfs_streq(const char *s1, const char *s2) EXPORT_SYMBOL(sysfs_streq); /** - * match_string - matches given string in an array + * __match_string - matches given string in an array * @array: array of strings * @n: number of strings in the array or -1 for NULL terminated arrays * @string: string to match with @@ -914,7 +914,7 @@ EXPORT_SYMBOL(sysfs_streq); * Return: * index of a @string in the @array if matches, or %-EINVAL otherwise. */ -int match_string(const char * const *array, size_t n, const char *string) +int __match_string(const char * const *array, size_t n, const char *string) { int index; const char *item; @@ -929,7 +929,7 @@ int match_string(const char * const *array, size_t n, const char *string) return -EINVAL; } -EXPORT_SYMBOL(match_string); +EXPORT_SYMBOL(__match_string); /** * __sysfs_match_string - matches given string in an array diff --git a/mm/mempolicy.c b/mm/mempolicy.c index aec756ae5637..89c132170431 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -89,7 +89,6 @@ #include <linux/nodemask.h> #include <linux/cpuset.h> #include <linux/slab.h> -#include <linux/string.h> #include <linux/export.h> #include <linux/nsproxy.h> #include <linux/interrupt.h> @@ -103,6 +102,7 @@ #include <linux/ksm.h> #include <linux/rmap.h> #include <linux/security.h> +#include <linux/string_helpers.h> #include <linux/syscalls.h> #include <linux/ctype.h> #include <linux/mm_inline.h> @@ -3183,7 +3183,7 @@ int mpol_parse_str(char *str, struct mempolicy **mpol) } else nodes_clear(nodes); - mode = match_string(policy_modes, MPOL_MAX, str); + mode = match_string(policy_modes, str); if (mode < 0) goto out; diff --git a/mm/vmpressure.c b/mm/vmpressure.c index bd5183dfd879..eaaa133ce12b 100644 --- a/mm/vmpressure.c +++ b/mm/vmpressure.c @@ -388,7 +388,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, /* Find required level */ token = strsep(&spec, ","); - ret = match_string(vmpressure_str_levels, VMPRESSURE_NUM_LEVELS, token); + ret = match_string(vmpressure_str_levels, token); if (ret < 0) goto out; level = ret; @@ -396,7 +396,7 @@ int vmpressure_register_event(struct mem_cgroup *memcg, /* Find optional mode */ token = strsep(&spec, ","); if (token) { - ret = match_string(vmpressure_str_modes, VMPRESSURE_NUM_MODES, token); + ret = match_string(vmpressure_str_modes, token); if (ret < 0) goto out; mode = ret; diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index 6239777090c4..e3fc94b4c7e5 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -1820,9 +1820,9 @@ static int param_set_audit(const char *val, const struct kernel_param *kp) if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) return -EPERM; - i = match_string(audit_mode_names, AUDIT_MAX_INDEX, val); + i = __match_string(audit_mode_names, AUDIT_MAX_INDEX, val); if (i < 0) - return -EINVAL; + return i; aa_g_audit = i; return 0; @@ -1849,10 +1849,9 @@ static int param_set_mode(const char *val, const struct kernel_param *kp) if (apparmor_initialized && !aa_current_policy_admin_capable(NULL)) return -EPERM; - i = match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, - val); + i = __match_string(aa_profile_mode_names, APPARMOR_MODE_NAMES_MAX_INDEX, val); if (i < 0) - return -EINVAL; + return i; aa_g_profile_mode = i; return 0; diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index f04f43af651c..49d6e9cc3387 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -64,7 +64,7 @@ static int __init hash_setup(char *str) goto out; } - i = match_string(hash_algo_name, HASH_ALGO__LAST, str); + i = __match_string(hash_algo_name, HASH_ALGO__LAST, str); if (i < 0) { pr_err("invalid hash algorithm \"%s\"", str); return 1; diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index c0556907c2e6..fa67c5794071 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -1380,7 +1380,7 @@ static unsigned int ima_parse_appraise_algos(char *arg) char *token; while ((token = strsep(&arg, ",")) != NULL) { - idx = match_string(hash_algo_name, HASH_ALGO__LAST, token); + idx = __match_string(hash_algo_name, HASH_ALGO__LAST, token); if (idx < 0) { pr_err("unknown hash algorithm \"%s\"", diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c index 98ae0e8cba87..5b38069daa0a 100644 --- a/sound/firewire/oxfw/oxfw.c +++ b/sound/firewire/oxfw/oxfw.c @@ -59,7 +59,7 @@ static bool detect_loud_models(struct fw_unit *unit) if (err < 0) return false; - return match_string(models, ARRAY_SIZE(models), model) >= 0; + return match_string(models, model) >= 0; } static int name_card(struct snd_oxfw *oxfw, const struct ieee1394_device_id *entry) diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c index eb3aca16359c..73e15d5d6be9 100644 --- a/sound/pci/oxygen/oxygen_mixer.c +++ b/sound/pci/oxygen/oxygen_mixer.c @@ -1074,7 +1074,7 @@ static int add_controls(struct oxygen *chip, err = snd_ctl_add(chip->card, ctl); if (err < 0) return err; - j = match_string(known_ctl_names, CONTROL_COUNT, ctl->id.name); + j = match_string(known_ctl_names, ctl->id.name); if (j >= 0) { chip->controls[j] = ctl; ctl->private_free = oxygen_any_ctl_free; diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c index 8b56ee550c09..4736a4ba0e1f 100644 --- a/sound/soc/codecs/max98088.c +++ b/sound/soc/codecs/max98088.c @@ -1414,7 +1414,7 @@ static int max98088_get_channel(struct snd_soc_component *component, const char { int ret; - ret = match_string(eq_mode_name, ARRAY_SIZE(eq_mode_name), name); + ret = match_string(eq_mode_name, name); if (ret < 0) dev_err(component->dev, "Bad EQ channel name '%s'\n", name); return ret; diff --git a/sound/soc/codecs/max98095.c b/sound/soc/codecs/max98095.c index 7e525d49328d..430bce3333a9 100644 --- a/sound/soc/codecs/max98095.c +++ b/sound/soc/codecs/max98095.c @@ -1627,7 +1627,7 @@ static int max98095_get_bq_channel(struct snd_soc_component *component, { int ret; - ret = match_string(bq_mode_name, ARRAY_SIZE(bq_mode_name), name); + ret = match_string(bq_mode_name, name); if (ret < 0) dev_err(component->dev, "Bad biquad channel name '%s'\n", name); return ret; diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 16dad4a45443..7064f4cae549 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -769,14 +769,13 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, item = 0; } - i = match_string(e->texts, e->items, control_name); + i = __match_string(e->texts, e->items, control_name); if (i < 0) - return -ENODEV; + return i; path->name = e->texts[i]; path->connect = (i == item); return 0; - } /* set up initial codec paths */
Make two APIs look similar. Hence convert match_string() to be a 2-argument macro. In order to avoid unneeded churn, convert all users as well. There is no functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- Compile tested with `make allyesconfig` and `make allmodconfig` on x86_64, arm, aarch64, powerpc64 (8 builds total). I guess the best is to apply it to Linus' tree directly. And now it seems a good timing as there are no new users of this API either in v6.10-rcX, or in Linux Next. But if you think differently, tell me. arch/powerpc/xmon/xmon.c | 5 ++-- arch/x86/kernel/cpu/mtrr/if.c | 4 +-- crypto/asymmetric_keys/pkcs7_verify.c | 4 +-- drivers/acpi/scan.c | 4 +-- drivers/ata/pata_hpt366.c | 2 +- drivers/ata/pata_hpt37x.c | 2 +- drivers/base/property.c | 6 ++-- drivers/char/ipmi/ipmi_msghandler.c | 2 +- drivers/char/ipmi/ipmi_si_hardcode.c | 2 +- drivers/clk/bcm/clk-bcm2835.c | 4 +-- drivers/clk/rockchip/clk.c | 4 +-- drivers/clk/tegra/clk-tegra124-emc.c | 7 ++--- drivers/cpufreq/amd-pstate.c | 4 +-- drivers/cpufreq/intel_pstate.c | 2 +- .../intel/qat/qat_common/adf_cfg_services.c | 5 ++-- .../gpu/drm/drm_panel_orientation_quirks.c | 2 +- drivers/gpu/drm/i915/display/intel_pipe_crc.c | 2 +- drivers/gpu/drm/nouveau/dispnv04/tvnv17.c | 4 +-- drivers/gpu/drm/nouveau/dispnv50/crc.c | 2 +- drivers/hwmon/ltc4282.c | 14 ++++----- drivers/hwmon/nct6775-platform.c | 6 ++-- drivers/hwtracing/intel_th/msu.c | 2 +- drivers/i2c/busses/i2c-i801.c | 4 +-- drivers/leds/leds-sun50i-a100.c | 2 +- drivers/mfd/omap-usb-host.c | 2 +- drivers/mmc/host/sdhci-xenon-phy.c | 13 ++++----- drivers/mtd/nand/raw/nand_macronix.c | 10 ++----- .../net/ethernet/chelsio/cxgb4/cudbg_lib.c | 6 ++-- .../net/wireless/intel/iwlwifi/mvm/debugfs.c | 2 +- drivers/pci/pcie/aer.c | 2 +- drivers/phy/mediatek/phy-mtk-tphy.c | 8 ++--- drivers/phy/tegra/xusb.c | 4 +-- drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 6 ++-- drivers/pinctrl/pinmux.c | 6 ++-- drivers/platform/x86/hp/hp-wmi.c | 29 +++++++------------ drivers/platform/x86/msi-ec.c | 4 +-- drivers/power/supply/ab8500_btemp.c | 2 +- drivers/power/supply/ab8500_chargalg.c | 2 +- drivers/power/supply/ab8500_charger.c | 2 +- drivers/power/supply/ab8500_fg.c | 2 +- drivers/staging/gdm724x/gdm_tty.c | 5 ++-- .../int340x_thermal/processor_thermal_rfim.c | 4 +-- .../processor_thermal_wt_req.c | 2 +- drivers/usb/common/common.c | 8 ++--- drivers/usb/dwc3/dwc3-rtk.c | 2 +- drivers/usb/typec/class.c | 14 ++++----- drivers/usb/typec/tipd/core.c | 3 +- drivers/video/fbdev/pxafb.c | 4 +-- fs/bcachefs/compress.c | 2 +- fs/bcachefs/opts.c | 4 +-- fs/bcachefs/util.c | 4 +-- fs/ubifs/auth.c | 8 ++--- include/linux/string.h | 12 +++++++- kernel/cgroup/rdma.c | 2 +- kernel/sched/debug.c | 2 +- kernel/trace/trace.c | 4 +-- kernel/trace/trace_osnoise.c | 4 +-- lib/dynamic_debug.c | 5 ++-- lib/string_helpers.c | 6 ++-- mm/mempolicy.c | 4 +-- mm/vmpressure.c | 4 +-- security/apparmor/lsm.c | 9 +++--- security/integrity/ima/ima_main.c | 2 +- security/integrity/ima/ima_policy.c | 2 +- sound/firewire/oxfw/oxfw.c | 2 +- sound/pci/oxygen/oxygen_mixer.c | 2 +- sound/soc/codecs/max98088.c | 2 +- sound/soc/codecs/max98095.c | 2 +- sound/soc/soc-dapm.c | 5 ++-- 69 files changed, 150 insertions(+), 174 deletions(-)