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PM / QoS: Fix writing 'auto' to pm_qos_latency_tolerance_us

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If it was already 'auto', then writing 'auto' again would
incorrectly fail.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Andrew Lutomirski 2016-11-29 17:11:51 -08:00 committed by Rafael J. Wysocki
parent ee061da8d9
commit 80a6f7c79b
1 changed files with 4 additions and 1 deletions
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5
drivers/base/power/qos.c
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@ -856,7 +856,10 @@ int dev_pm_qos_update_user_latency_tolerance(struct device *dev, s32 val)
struct dev_pm_qos_request *req;
if (val < 0) {
ret = -EINVAL;
if (val == PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT)
ret = 0;
else
ret = -EINVAL;
goto out;
}
req = kzalloc(sizeof(*req), GFP_KERNEL);