Commit fa180eb4 authored Apr 10, 2013 by Ulf Hansson Committed by Greg Kroah-Hartman Apr 11, 2013

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: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 4e4098a3

drivers/base/dd.c

+3 −3

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

		pm_runtime_barrier(dev);
		ret = really_probe(dev, drv);
		pm_runtime_idle(dev);
		pm_request_idle(dev);

		return ret;
		}
		@@ -428,7 +428,7 @@ int device_attach(struct device *dev)
		}
		} else {
		ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach);
		pm_runtime_idle(dev);
		pm_request_idle(dev);
		}
		out_unlock:
		device_unlock(dev);
		@@ -499,7 +499,7 @@ static void __device_release_driver(struct device *dev)
		BUS_NOTIFY_UNBIND_DRIVER,
		dev);

		pm_runtime_put_sync(dev);
		pm_runtime_put(dev);

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

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