| Message ID | 20240731191312.1710417-2-robh@kernel.org (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | viresh kumar |
| Headers | show |
| Series | cpufreq: Use of_property_present() | expand |
On Thu, Aug 1, 2024 at 3:13 AM Rob Herring (Arm) <robh@kernel.org> wrote: > > Use of_property_present() to test for property presence rather than > of_(find|get)_property(). This is part of a larger effort to remove > callers of of_find_property() and similar functions. of_find_property() > leaks the DT struct property and data pointers which is a problem for > dynamically allocated nodes which may be freed. > > Signed-off-by: Rob Herring (Arm) <robh@kernel.org> > --- > drivers/cpufreq/cpufreq-dt.c | 11 +++-------- > drivers/cpufreq/pmac64-cpufreq.c | 2 +- > drivers/cpufreq/sti-cpufreq.c | 2 +- > drivers/cpufreq/sun50i-cpufreq-nvmem.c | 2 +- Acked-by: Chen-Yu Tsai <wens@csie.org>
On 31-07-24, 13:12, Rob Herring (Arm) wrote: > Use of_property_present() to test for property presence rather than > of_(find|get)_property(). This is part of a larger effort to remove > callers of of_find_property() and similar functions. of_find_property() > leaks the DT struct property and data pointers which is a problem for > dynamically allocated nodes which may be freed. > > Signed-off-by: Rob Herring (Arm) <robh@kernel.org> > --- > drivers/cpufreq/cpufreq-dt.c | 11 +++-------- > drivers/cpufreq/pmac64-cpufreq.c | 2 +- > drivers/cpufreq/sti-cpufreq.c | 2 +- > drivers/cpufreq/sun50i-cpufreq-nvmem.c | 2 +- > 4 files changed, 6 insertions(+), 11 deletions(-) Applied. Thanks.
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 6532c4d71338..983443396f8f 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -69,7 +69,6 @@ static int set_target(struct cpufreq_policy *policy, unsigned int index) static const char *find_supply_name(struct device *dev) { struct device_node *np __free(device_node) = of_node_get(dev->of_node); - struct property *pp; int cpu = dev->id; /* This must be valid for sure */ @@ -77,14 +76,10 @@ static const char *find_supply_name(struct device *dev) return NULL; /* Try "cpu0" for older DTs */ - if (!cpu) { - pp = of_find_property(np, "cpu0-supply", NULL); - if (pp) - return "cpu0"; - } + if (!cpu && of_property_present(np, "cpu0-supply")) + return "cpu0"; - pp = of_find_property(np, "cpu-supply", NULL); - if (pp) + if (of_property_present(np, "cpu-supply")) return "cpu"; dev_dbg(dev, "no regulator for cpu%d\n", cpu); diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c index 2cd2b06849a2..c87cd6e0b638 100644 --- a/drivers/cpufreq/pmac64-cpufreq.c +++ b/drivers/cpufreq/pmac64-cpufreq.c @@ -505,7 +505,7 @@ static int __init g5_pm72_cpufreq_init(struct device_node *cpunode) continue; if (strcmp(loc, "CPU CLOCK")) continue; - if (!of_get_property(hwclock, "platform-get-frequency", NULL)) + if (!of_property_present(hwclock, "platform-get-frequency")) continue; break; } diff --git a/drivers/cpufreq/sti-cpufreq.c b/drivers/cpufreq/sti-cpufreq.c index 8e2e703c3865..b15b3142b5fe 100644 --- a/drivers/cpufreq/sti-cpufreq.c +++ b/drivers/cpufreq/sti-cpufreq.c @@ -267,7 +267,7 @@ static int __init sti_cpufreq_init(void) goto skip_voltage_scaling; } - if (!of_get_property(ddata.cpu->of_node, "operating-points-v2", NULL)) { + if (!of_property_present(ddata.cpu->of_node, "operating-points-v2")) { dev_err(ddata.cpu, "OPP-v2 not supported\n"); goto skip_voltage_scaling; } diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 95ac8d46c156..293921acec93 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -146,7 +146,7 @@ static bool dt_has_supported_hw(void) return false; for_each_child_of_node_scoped(np, opp) { - if (of_find_property(opp, "opp-supported-hw", NULL)) { + if (of_property_present(opp, "opp-supported-hw")) { has_opp_supported_hw = true; break; }
Use of_property_present() to test for property presence rather than of_(find|get)_property(). This is part of a larger effort to remove callers of of_find_property() and similar functions. of_find_property() leaks the DT struct property and data pointers which is a problem for dynamically allocated nodes which may be freed. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> --- drivers/cpufreq/cpufreq-dt.c | 11 +++-------- drivers/cpufreq/pmac64-cpufreq.c | 2 +- drivers/cpufreq/sti-cpufreq.c | 2 +- drivers/cpufreq/sun50i-cpufreq-nvmem.c | 2 +- 4 files changed, 6 insertions(+), 11 deletions(-)