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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2019-08-29 16:48:15 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-09-02 22:38:00 +0200 |
| commit | 3ea4ca9267cf5d02149f7d8a11d8b4c82723a668 (patch) | |
| tree | 8db7e502e8bf8f18520ca19aa951ba81814ac2bb /drivers/base | |
| parent | PM / Domains: Simplify genpd_lookup_dev() (diff) | |
| download | linux-dev-3ea4ca9267cf5d02149f7d8a11d8b4c82723a668.tar.xz linux-dev-3ea4ca9267cf5d02149f7d8a11d8b4c82723a668.zip | |
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>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/domain.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 59d6f183d0bb..cc85e87eaf05 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -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)) |