"Rafael J. Wysocki" <r...@rjwysocki.net> writes: > From: Rafael J. Wysocki <rafael.j.wyso...@intel.com> > > Arjan reports that it takes a relatively long time to enable runtime > PM for multiple devices at system startup, because all writes to the > "control" attribute in sysfs are handled synchronously and if the > device is suspended as a result of the write, it will block until > that operation is complete. > > That may be avoided by passing the RPM_ASYNC flag to rpm_idle() > in pm_runtime_allow() which will make it execute the device's > "idle" callback asynchronously, so writes to "control" changing > it from "on" to "auto" will return without waiting. > > Reported-by: Arjan van de Ven <ar...@linux.intel.com> > Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
Reviewed-by: Kevin Hilman <khil...@baylibre.com>
