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PM / Domains: Verify PM domain type in dev_pm_genpd_set_performance_state() 

The dev_pm_genpd_set_performance_state() could in principle be called for a
device that has a different PM domain type attached than a genpd. This
would lead to a problem as dev_to_genpd() uses the container_of macro.

Address this problem by using dev_to_genpd_safe() instead.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2019-08-29 16:48:15 +02:00 committed by Rafael J. Wysocki
parent b3ad17c098
commit 3ea4ca9267
1 changed files with 2 additions and 2 deletions
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4
drivers/base/power/domain.c
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@ -380,8 +380,8 @@ int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state)
unsigned int prev;
int ret;
genpd = dev_to_genpd(dev);
if (IS_ERR(genpd))
genpd = dev_to_genpd_safe(dev);
if (!genpd)
return -ENODEV;
if (unlikely(!genpd->set_performance_state))