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Commit fa180eb4 authored by Ulf Hansson's avatar Ulf Hansson Committed by Greg Kroah-Hartman
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PM / Runtime: Idle devices asynchronously after probe|release 



Putting devices into idle|suspend in a synchronous manner means we are
waiting for each device to become idle|suspended before the probe|release
is fully done.

This patch switch to use the asynchronous runtime PM API:s instead and
thus improves the parallelism since we can move on and handle the next
device in queue in an earlier phase.

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Acked-by: default avatarKevin Hilman <khilman@linaro.org>
Acked-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4e4098a3

drivers/base/dd.c

+3 −3
Original line number Original line Diff line number Diff line
@@ -380,7 +380,7 @@ int driver_probe_device(struct device_driver *drv, struct device *dev) 




	pm_runtime_barrier(dev);

	pm_runtime_barrier(dev);

	ret = really_probe(dev, drv);

	ret = really_probe(dev, drv);

	pm_runtime_idle(dev);

	pm_request_idle(dev);





	return ret;

	return ret;

}

}
@@ -428,7 +428,7 @@ int device_attach(struct device *dev) 
		}

		}

	} else {

	} else {

		ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);

		ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);

		pm_runtime_idle(dev);

		pm_request_idle(dev);

	}

	}

out_unlock:

out_unlock:

	device_unlock(dev);

	device_unlock(dev);
@@ -499,7 +499,7 @@ static void __device_release_driver(struct device *dev) 
						     BUS_NOTIFY_UNBIND_DRIVER,

						     BUS_NOTIFY_UNBIND_DRIVER,

						     dev);

						     dev);





		pm_runtime_put_sync(dev);

		pm_runtime_put(dev);





		if (dev->bus && dev->bus->remove)

		if (dev->bus && dev->bus->remove)

			dev->bus->remove(dev);

			dev->bus->remove(dev);