PM / Runtime: Respect autosuspend when idle triggers suspend

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For devices which don't have a .runtime_idle() callback or if it
returns 0, rpm_idle() will end up in triggering a call to
rpm_suspend(), thus trying to carry out a runtime suspend directly
from runtime_idle().

In the above situation we want to respect devices which has enabled
autosuspend, we therfore append the flag sent to rpm_suspend with
RPM_AUTO.

Do note that drivers still needs to update the device last busy mark,
to control the delay for this circumstance.

Updated runtime PM documentation accordingly.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Ulf Hansson 2013-10-15 22:25:08 +02:00 • committed by Rafael J. Wysocki

parent 61e6cfa80d

commit d66e6db28d

2 changed files with 11 additions and 8 deletions

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14

Documentation/power/runtime_pm.txt

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5

drivers/base/power/runtime.c

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