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genpd_syscore_switch() had two problems:
1. It silently assumed that device, it is being called for, belongs
to generic power domain and used container_of() on its power
domain pointer. Such assumption might not be true always.
2. It iterated over list of generic power domains without holding
gpd_list_lock mutex thus list could have been modified at the same
time.
Usage of genpd_lookup_dev() solves both problems as it is safe a call
for non-generic power domains and uses mutex when iterating.
Reported-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
8b55e55ee4