From patchwork Thu Jun 3 00:01:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= X-Patchwork-Id: 12295849 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 587E3C4708F for ; Thu, 3 Jun 2021 00:01:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F50E613E7 for ; Thu, 3 Jun 2021 00:01:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229553AbhFCADM (ORCPT ); Wed, 2 Jun 2021 20:03:12 -0400 Received: from mail-wr1-f48.google.com ([209.85.221.48]:38590 "EHLO mail-wr1-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229541AbhFCADL (ORCPT ); Wed, 2 Jun 2021 20:03:11 -0400 Received: by mail-wr1-f48.google.com with SMTP id j14so3959328wrq.5 for ; Wed, 02 Jun 2021 17:01:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=A09UlryTOPln3fFpkVuLZasYFxq4vmeL4FwV8LQspjg=; b=RZNc40I3cBRoubmyEF09YgNLsGffxaaFD9mnT5zy0Pobk2niVObkAw7iHpR+qEo7Fc Iu6fMS/+raSHbYb7aCuMcA3u4s0bVybZGLHK4p6I3mUAOnDQM8LQf7msYhyWh3u8sKsA +OQRbYj5RpD8o+6S14OYkJTPngUctNhcoBZFNKbwTLlCb6tYVuNcV8RM3+UO0I8eRRhY Y7q5l8/8EBUPe9hIfbQMLM2i7WTyXz7HKAdde9cIYIj4CNnrTJxFlMeR675ILwqrEkm9 ekyqLQtfYoQueZulWaSsR6Na+l625MP4ShPclOZ288gBYUVFTCUOtdKyzlCrK2BefeP4 uypQ== X-Gm-Message-State: AOAM531vzgrYxZn6Q/zhlnpp1I1jQOPV+LlvDLg0D3ET2iWu9A1M1CGw n7wR1OiwZWSGpTXPqI79dmk= X-Google-Smtp-Source: ABdhPJyROB2OD1tiRHFGSZtmqaM1nZj0PPf6b85h+VYpNIo4jz3QngaSenK9g12iVr/rIM4PWHUFMg== X-Received: by 2002:a5d:4304:: with SMTP id h4mr36606412wrq.210.1622678476888; Wed, 02 Jun 2021 17:01:16 -0700 (PDT) Received: from workstation.lan ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id c7sm1424669wrs.23.2021.06.02.17.01.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jun 2021 17:01:16 -0700 (PDT) From: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: Logan Gunthorpe , Joe Perches , "Oliver O'Halloran" , Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Tyrel Datwyler , Russell Currey , Kurt Schwemmer , Vidya Sagar , Xiongfeng Wang , linux-pci@vger.kernel.org Subject: [PATCH v6 1/6] PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions Date: Thu, 3 Jun 2021 00:01:07 +0000 Message-Id: <20210603000112.703037-2-kw@linux.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210603000112.703037-1-kw@linux.com> References: <20210603000112.703037-1-kw@linux.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The sysfs_emit() and sysfs_emit_at() functions were introduced to make it less ambiguous which function is preferred when writing to the output buffer in a device attribute's "show" callback [1]. Convert the PCI sysfs object "show" functions from sprintf(), snprintf() and scnprintf() to sysfs_emit() and sysfs_emit_at() accordingly, as the latter is aware of the PAGE_SIZE buffer and correctly returns the number of bytes written into the buffer. No functional change intended. [1] Documentation/filesystems/sysfs.rst Related to: commit ad025f8e46f3 ("PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions") Signed-off-by: Krzysztof Wilczyński Reviewed-by: Logan Gunthorpe --- drivers/pci/hotplug/pci_hotplug_core.c | 8 +++--- drivers/pci/hotplug/rpadlpar_sysfs.c | 4 +-- drivers/pci/hotplug/shpchp_sysfs.c | 38 ++++++++++++++------------ drivers/pci/iov.c | 12 ++++---- drivers/pci/msi.c | 8 +++--- drivers/pci/p2pdma.c | 7 ++--- drivers/pci/pci-label.c | 6 ++-- drivers/pci/pci.c | 2 +- drivers/pci/pcie/aer.c | 20 ++++++++------ drivers/pci/pcie/aspm.c | 4 +-- drivers/pci/slot.c | 18 ++++++------ drivers/pci/switch/switchtec.c | 18 ++++++------ 12 files changed, 75 insertions(+), 70 deletions(-) diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c index 5ac31f683b85..058d5937d8a9 100644 --- a/drivers/pci/hotplug/pci_hotplug_core.c +++ b/drivers/pci/hotplug/pci_hotplug_core.c @@ -73,7 +73,7 @@ static ssize_t power_read_file(struct pci_slot *pci_slot, char *buf) if (retval) return retval; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static ssize_t power_write_file(struct pci_slot *pci_slot, const char *buf, @@ -130,7 +130,7 @@ static ssize_t attention_read_file(struct pci_slot *pci_slot, char *buf) if (retval) return retval; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static ssize_t attention_write_file(struct pci_slot *pci_slot, const char *buf, @@ -175,7 +175,7 @@ static ssize_t latch_read_file(struct pci_slot *pci_slot, char *buf) if (retval) return retval; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static struct pci_slot_attribute hotplug_slot_attr_latch = { @@ -192,7 +192,7 @@ static ssize_t presence_read_file(struct pci_slot *pci_slot, char *buf) if (retval) return retval; - return sprintf(buf, "%d\n", value); + return sysfs_emit(buf, "%d\n", value); } static struct pci_slot_attribute hotplug_slot_attr_presence = { diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c b/drivers/pci/hotplug/rpadlpar_sysfs.c index dbfa0b55d31a..068b7810a574 100644 --- a/drivers/pci/hotplug/rpadlpar_sysfs.c +++ b/drivers/pci/hotplug/rpadlpar_sysfs.c @@ -50,7 +50,7 @@ static ssize_t add_slot_store(struct kobject *kobj, struct kobj_attribute *attr, static ssize_t add_slot_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "0\n"); + return sysfs_emit(buf, "0\n"); } static ssize_t remove_slot_store(struct kobject *kobj, @@ -80,7 +80,7 @@ static ssize_t remove_slot_store(struct kobject *kobj, static ssize_t remove_slot_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { - return sprintf(buf, "0\n"); + return sysfs_emit(buf, "0\n"); } static struct kobj_attribute add_slot_attr = diff --git a/drivers/pci/hotplug/shpchp_sysfs.c b/drivers/pci/hotplug/shpchp_sysfs.c index 45658bb5c554..64beed7a26be 100644 --- a/drivers/pci/hotplug/shpchp_sysfs.c +++ b/drivers/pci/hotplug/shpchp_sysfs.c @@ -24,50 +24,54 @@ static ssize_t show_ctrl(struct device *dev, struct device_attribute *attr, char *buf) { struct pci_dev *pdev; - char *out = buf; int index, busnr; struct resource *res; struct pci_bus *bus; + size_t len = 0; pdev = to_pci_dev(dev); bus = pdev->subordinate; - out += sprintf(buf, "Free resources: memory\n"); + len += sysfs_emit_at(buf, len, "Free resources: memory\n"); pci_bus_for_each_resource(bus, res, index) { if (res && (res->flags & IORESOURCE_MEM) && !(res->flags & IORESOURCE_PREFETCH)) { - out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", - (unsigned long long)res->start, - (unsigned long long)resource_size(res)); + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); } } - out += sprintf(out, "Free resources: prefetchable memory\n"); + len += sysfs_emit_at(buf, len, "Free resources: prefetchable memory\n"); pci_bus_for_each_resource(bus, res, index) { if (res && (res->flags & IORESOURCE_MEM) && (res->flags & IORESOURCE_PREFETCH)) { - out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", - (unsigned long long)res->start, - (unsigned long long)resource_size(res)); + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); } } - out += sprintf(out, "Free resources: IO\n"); + len += sysfs_emit_at(buf, len, "Free resources: IO\n"); pci_bus_for_each_resource(bus, res, index) { if (res && (res->flags & IORESOURCE_IO)) { - out += sprintf(out, "start = %8.8llx, length = %8.8llx\n", - (unsigned long long)res->start, - (unsigned long long)resource_size(res)); + len += sysfs_emit_at(buf, len, + "start = %8.8llx, length = %8.8llx\n", + (unsigned long long)res->start, + (unsigned long long)resource_size(res)); } } - out += sprintf(out, "Free resources: bus numbers\n"); + len += sysfs_emit_at(buf, len, "Free resources: bus numbers\n"); for (busnr = bus->busn_res.start; busnr <= bus->busn_res.end; busnr++) { if (!pci_find_bus(pci_domain_nr(bus), busnr)) break; } if (busnr < bus->busn_res.end) - out += sprintf(out, "start = %8.8x, length = %8.8x\n", - busnr, (int)(bus->busn_res.end - busnr)); + len += sysfs_emit_at(buf, len, + "start = %8.8x, length = %8.8x\n", + busnr, (int)(bus->busn_res.end - busnr)); - return out - buf; + return len; } static DEVICE_ATTR(ctrl, S_IRUGO, show_ctrl, NULL); diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index afc06e6ce115..a71258347323 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -346,7 +346,7 @@ static ssize_t sriov_totalvfs_show(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); - return sprintf(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); + return sysfs_emit(buf, "%u\n", pci_sriov_get_totalvfs(pdev)); } static ssize_t sriov_numvfs_show(struct device *dev, @@ -361,7 +361,7 @@ static ssize_t sriov_numvfs_show(struct device *dev, num_vfs = pdev->sriov->num_VFs; device_unlock(&pdev->dev); - return sprintf(buf, "%u\n", num_vfs); + return sysfs_emit(buf, "%u\n", num_vfs); } /* @@ -435,7 +435,7 @@ static ssize_t sriov_offset_show(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); - return sprintf(buf, "%u\n", pdev->sriov->offset); + return sysfs_emit(buf, "%u\n", pdev->sriov->offset); } static ssize_t sriov_stride_show(struct device *dev, @@ -444,7 +444,7 @@ static ssize_t sriov_stride_show(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); - return sprintf(buf, "%u\n", pdev->sriov->stride); + return sysfs_emit(buf, "%u\n", pdev->sriov->stride); } static ssize_t sriov_vf_device_show(struct device *dev, @@ -453,7 +453,7 @@ static ssize_t sriov_vf_device_show(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); - return sprintf(buf, "%x\n", pdev->sriov->vf_device); + return sysfs_emit(buf, "%x\n", pdev->sriov->vf_device); } static ssize_t sriov_drivers_autoprobe_show(struct device *dev, @@ -462,7 +462,7 @@ static ssize_t sriov_drivers_autoprobe_show(struct device *dev, { struct pci_dev *pdev = to_pci_dev(dev); - return sprintf(buf, "%u\n", pdev->sriov->drivers_autoprobe); + return sysfs_emit(buf, "%u\n", pdev->sriov->drivers_autoprobe); } static ssize_t sriov_drivers_autoprobe_store(struct device *dev, diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 217dc9f0231f..9232255c8515 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -464,11 +464,11 @@ static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, return retval; entry = irq_get_msi_desc(irq); - if (entry) - return sprintf(buf, "%s\n", - entry->msi_attrib.is_msix ? "msix" : "msi"); + if (!entry) + return -ENODEV; - return -ENODEV; + return sysfs_emit(buf, "%s\n", + entry->msi_attrib.is_msix ? "msix" : "msi"); } static int populate_msi_sysfs(struct pci_dev *pdev) diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 196382630363..a1351b3e2c4c 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -53,7 +53,7 @@ static ssize_t size_show(struct device *dev, struct device_attribute *attr, if (pdev->p2pdma->pool) size = gen_pool_size(pdev->p2pdma->pool); - return scnprintf(buf, PAGE_SIZE, "%zd\n", size); + return sysfs_emit(buf, "%zd\n", size); } static DEVICE_ATTR_RO(size); @@ -66,7 +66,7 @@ static ssize_t available_show(struct device *dev, struct device_attribute *attr, if (pdev->p2pdma->pool) avail = gen_pool_avail(pdev->p2pdma->pool); - return scnprintf(buf, PAGE_SIZE, "%zd\n", avail); + return sysfs_emit(buf, "%zd\n", avail); } static DEVICE_ATTR_RO(available); @@ -75,8 +75,7 @@ static ssize_t published_show(struct device *dev, struct device_attribute *attr, { struct pci_dev *pdev = to_pci_dev(dev); - return scnprintf(buf, PAGE_SIZE, "%d\n", - pdev->p2pdma->p2pmem_published); + return sysfs_emit(buf, "%d\n", pdev->p2pdma->p2pmem_published); } static DEVICE_ATTR_RO(published); diff --git a/drivers/pci/pci-label.c b/drivers/pci/pci-label.c index c32f3b7540e8..311dd48e2881 100644 --- a/drivers/pci/pci-label.c +++ b/drivers/pci/pci-label.c @@ -175,11 +175,11 @@ static int dsm_get_label(struct device *dev, char *buf, * this entry must return a null string. */ if (attr == ACPI_ATTR_INDEX_SHOW) { - scnprintf(buf, PAGE_SIZE, "%llu\n", tmp->integer.value); + sysfs_emit(buf, "%llu\n", tmp->integer.value); } else if (attr == ACPI_ATTR_LABEL_SHOW) { if (tmp[1].type == ACPI_TYPE_STRING) - scnprintf(buf, PAGE_SIZE, "%s\n", - tmp[1].string.pointer); + sysfs_emit(buf, "%s\n", + tmp[1].string.pointer); else if (tmp[1].type == ACPI_TYPE_BUFFER) dsm_label_utf16s_to_utf8s(tmp + 1, buf); } diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index b717680377a9..5ed316ea5831 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -6439,7 +6439,7 @@ static ssize_t resource_alignment_show(struct bus_type *bus, char *buf) spin_lock(&resource_alignment_lock); if (resource_alignment_param) - count = scnprintf(buf, PAGE_SIZE, "%s", resource_alignment_param); + count = sysfs_emit(buf, "%s", resource_alignment_param); spin_unlock(&resource_alignment_lock); /* diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index ec943cee5ecc..40ef7bed7a77 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -529,21 +529,23 @@ static const char *aer_agent_string[] = { char *buf) \ { \ unsigned int i; \ - char *str = buf; \ struct pci_dev *pdev = to_pci_dev(dev); \ u64 *stats = pdev->aer_stats->stats_array; \ + size_t len = 0; \ \ for (i = 0; i < ARRAY_SIZE(strings_array); i++) { \ if (strings_array[i]) \ - str += sprintf(str, "%s %llu\n", \ - strings_array[i], stats[i]); \ + len += sysfs_emit_at(buf, len, "%s %llu\n", \ + strings_array[i], \ + stats[i]); \ else if (stats[i]) \ - str += sprintf(str, #stats_array "_bit[%d] %llu\n",\ - i, stats[i]); \ + len += sysfs_emit_at(buf, len, \ + #stats_array "_bit[%d] %llu\n",\ + i, stats[i]); \ } \ - str += sprintf(str, "TOTAL_%s %llu\n", total_string, \ - pdev->aer_stats->total_field); \ - return str-buf; \ + len += sysfs_emit_at(buf, len, "TOTAL_%s %llu\n", total_string, \ + pdev->aer_stats->total_field); \ + return len; \ } \ static DEVICE_ATTR_RO(name) @@ -563,7 +565,7 @@ aer_stats_dev_attr(aer_dev_nonfatal, dev_nonfatal_errs, char *buf) \ { \ struct pci_dev *pdev = to_pci_dev(dev); \ - return sprintf(buf, "%llu\n", pdev->aer_stats->field); \ + return sysfs_emit(buf, "%llu\n", pdev->aer_stats->field); \ } \ static DEVICE_ATTR_RO(name) diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index ac0557a305af..013a47f587ce 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -1208,7 +1208,7 @@ static ssize_t aspm_attr_show_common(struct device *dev, struct pci_dev *pdev = to_pci_dev(dev); struct pcie_link_state *link = pcie_aspm_get_link(pdev); - return sprintf(buf, "%d\n", (link->aspm_enabled & state) ? 1 : 0); + return sysfs_emit(buf, "%d\n", (link->aspm_enabled & state) ? 1 : 0); } static ssize_t aspm_attr_store_common(struct device *dev, @@ -1265,7 +1265,7 @@ static ssize_t clkpm_show(struct device *dev, struct pci_dev *pdev = to_pci_dev(dev); struct pcie_link_state *link = pcie_aspm_get_link(pdev); - return sprintf(buf, "%d\n", link->clkpm_enabled); + return sysfs_emit(buf, "%d\n", link->clkpm_enabled); } static ssize_t clkpm_store(struct device *dev, diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index d627dd9179b4..751a26668e3a 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -39,19 +39,19 @@ static const struct sysfs_ops pci_slot_sysfs_ops = { static ssize_t address_read_file(struct pci_slot *slot, char *buf) { if (slot->number == 0xff) - return sprintf(buf, "%04x:%02x\n", - pci_domain_nr(slot->bus), - slot->bus->number); - else - return sprintf(buf, "%04x:%02x:%02x\n", - pci_domain_nr(slot->bus), - slot->bus->number, - slot->number); + return sysfs_emit(buf, "%04x:%02x\n", + pci_domain_nr(slot->bus), + slot->bus->number); + + return sysfs_emit(buf, "%04x:%02x:%02x\n", + pci_domain_nr(slot->bus), + slot->bus->number, + slot->number); } static ssize_t bus_speed_read(enum pci_bus_speed speed, char *buf) { - return sprintf(buf, "%s\n", pci_speed_string(speed)); + return sysfs_emit(buf, "%s\n", pci_speed_string(speed)); } static ssize_t max_speed_read_file(struct pci_slot *slot, char *buf) diff --git a/drivers/pci/switch/switchtec.c b/drivers/pci/switch/switchtec.c index ba52459928f7..0b301f8be9ed 100644 --- a/drivers/pci/switch/switchtec.c +++ b/drivers/pci/switch/switchtec.c @@ -280,7 +280,7 @@ static ssize_t device_version_show(struct device *dev, ver = ioread32(&stdev->mmio_sys_info->device_version); - return sprintf(buf, "%x\n", ver); + return sysfs_emit(buf, "%x\n", ver); } static DEVICE_ATTR_RO(device_version); @@ -292,7 +292,7 @@ static ssize_t fw_version_show(struct device *dev, ver = ioread32(&stdev->mmio_sys_info->firmware_version); - return sprintf(buf, "%08x\n", ver); + return sysfs_emit(buf, "%08x\n", ver); } static DEVICE_ATTR_RO(fw_version); @@ -344,7 +344,7 @@ static ssize_t component_vendor_show(struct device *dev, /* component_vendor field not supported after gen3 */ if (stdev->gen != SWITCHTEC_GEN3) - return sprintf(buf, "none\n"); + return sysfs_emit(buf, "none\n"); return io_string_show(buf, &si->gen3.component_vendor, sizeof(si->gen3.component_vendor)); @@ -359,9 +359,9 @@ static ssize_t component_id_show(struct device *dev, /* component_id field not supported after gen3 */ if (stdev->gen != SWITCHTEC_GEN3) - return sprintf(buf, "none\n"); + return sysfs_emit(buf, "none\n"); - return sprintf(buf, "PM%04X\n", id); + return sysfs_emit(buf, "PM%04X\n", id); } static DEVICE_ATTR_RO(component_id); @@ -373,9 +373,9 @@ static ssize_t component_revision_show(struct device *dev, /* component_revision field not supported after gen3 */ if (stdev->gen != SWITCHTEC_GEN3) - return sprintf(buf, "255\n"); + return sysfs_emit(buf, "255\n"); - return sprintf(buf, "%d\n", rev); + return sysfs_emit(buf, "%d\n", rev); } static DEVICE_ATTR_RO(component_revision); @@ -384,7 +384,7 @@ static ssize_t partition_show(struct device *dev, { struct switchtec_dev *stdev = to_stdev(dev); - return sprintf(buf, "%d\n", stdev->partition); + return sysfs_emit(buf, "%d\n", stdev->partition); } static DEVICE_ATTR_RO(partition); @@ -393,7 +393,7 @@ static ssize_t partition_count_show(struct device *dev, { struct switchtec_dev *stdev = to_stdev(dev); - return sprintf(buf, "%d\n", stdev->partition_count); + return sysfs_emit(buf, "%d\n", stdev->partition_count); } static DEVICE_ATTR_RO(partition_count);