Commit 0d7fd70f authored by Will Deacon's avatar Will Deacon

drivers/perf: arm_pmu: Fix failure path in PM notifier

Handling of the CPU_PM_ENTER_FAILED transition in the Arm PMU PM
notifier code incorrectly skips restoration of the counters. Fix the
logic so that CPU_PM_ENTER_FAILED follows the same path as CPU_PM_EXIT.

Cc: <stable@vger.kernel.org>
Fixes: da4e4f18 ("drivers/perf: arm_pmu: implement CPU_PM notifier")
Reported-by: default avatarAnders Roxell <anders.roxell@linaro.org>
Acked-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 849adec4
......@@ -723,8 +723,8 @@ static int cpu_pm_pmu_notify(struct notifier_block *b, unsigned long cmd,
cpu_pm_pmu_setup(armpmu, cmd);
break;
case CPU_PM_EXIT:
cpu_pm_pmu_setup(armpmu, cmd);
case CPU_PM_ENTER_FAILED:
cpu_pm_pmu_setup(armpmu, cmd);
armpmu->start(armpmu);
break;
default:
......
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