Commit 3ea4ca92 authored Aug 29, 2019 by Ulf Hansson Committed by Rafael J. Wysocki Sep 02, 2019

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>

parent b3ad17c0

drivers/base/power/domain.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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))

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