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ARM: cpuidle: Pass on arm_cpuidle_suspend()'s return value

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arm_cpuidle_suspend() may return -EOPNOTSUPP, or any value returned
by the cpu_ops/cpuidle_ops suspend call. arm_enter_idle_state() doesn't
update 'ret' with this value, meaning we always signal success to
cpuidle_enter_state(), causing it to update the usage counters as if we
succeeded.

Fixes: 191de17aa3 ("ARM64: cpuidle: Replace cpu_suspend by the common ARM/ARM64 function")
Signed-off-by: James Morse <[email protected]>
Acked-by: Lorenzo Pieralisi <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Cc: 4.1+ <[email protected]> # 4.1+
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
James Morse 2016-04-26 12:15:01 +01:00 • committed by Rafael J. Wysocki
commit 625fe4f8ff
1 changed files with 1 additions and 1 deletions
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2
drivers/cpuidle/cpuidle-arm.c
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@ -50,7 +50,7 @@ static int arm_enter_idle_state(struct cpuidle_device *dev,
* call the CPU ops suspend protocol with idle index as a
* parameter.
*/
arm_cpuidle_suspend(idx);
ret = arm_cpuidle_suspend(idx);
cpu_pm_exit();
}