From 927bc9165d3cd01054b472f9b25d91a8707209c8 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 8 Feb 2010 19:18:16 +0100 Subject: PM: Allow USB devices to suspend/resume asynchronously Set power.async_suspend for USB devices, endpoints and interfaces, allowing them to be suspended and resumed asynchronously during system sleep transitions. The power.async_suspend flag is also set for devices that don't have suspend or resume callbacks, because otherwise they would make the main suspend/resume thread wait for their "asynchronous" children (during suspend) or parents (during resume), effectively negating the possible gains from executing these devices' suspend and resume callbacks asynchronously. Signed-off-by: Rafael J. Wysocki --- drivers/usb/core/endpoint.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/usb/core/endpoint.c') diff --git a/drivers/usb/core/endpoint.c b/drivers/usb/core/endpoint.c index fdfaa788551..d26b9ea981f 100644 --- a/drivers/usb/core/endpoint.c +++ b/drivers/usb/core/endpoint.c @@ -186,6 +186,7 @@ int usb_create_ep_devs(struct device *parent, ep_dev->dev.parent = parent; ep_dev->dev.release = ep_device_release; dev_set_name(&ep_dev->dev, "ep_%02x", endpoint->desc.bEndpointAddress); + device_enable_async_suspend(&ep_dev->dev); retval = device_register(&ep_dev->dev); if (retval) -- cgit v1.2.3-70-g09d2