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Commit 12f1ff83 authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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usbcore: small changes to hub driver's suspend method 



This patch (as847) makes some small changes to the hub driver's
suspend method:

	For root hubs, the status URB should be unlinked and other
	activity stopped _before_ the bus_suspend method is called.

	The test for hdev->bus being NULL has been removed, since
	it can never succeed.

Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 7fe89e9c

drivers/usb/core/hub.c

+10 −15
Original line number Diff line number Diff line
@@ -1904,6 +1904,7 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) 
	struct usb_hub		*hub = usb_get_intfdata (intf);

	struct usb_device	*hdev = hub->hdev;

	unsigned		port1;

	int			status = 0;



	/* fail if children aren't already suspended */

	for (port1 = 1; port1 <= hdev->maxchild; port1++) {
@@ -1927,24 +1928,18 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) 


	dev_dbg(&intf->dev, "%s\n", __FUNCTION__);



	/* stop khubd and related activity */

	hub_quiesce(hub);



	/* "global suspend" of the downstream HC-to-USB interface */

	if (!hdev->parent) {

		struct usb_bus	*bus = hdev->bus;

		if (bus) {

			int	status = hcd_bus_suspend (bus);



		status = hcd_bus_suspend(hdev->bus);

		if (status != 0) {

				dev_dbg(&hdev->dev, "'global' suspend %d\n",

					status);

				return status;

			dev_dbg(&hdev->dev, "'global' suspend %d\n", status);

			hub_activate(hub);

		}

		} else

			return -EOPNOTSUPP;

	}



	/* stop khubd and related activity */

	hub_quiesce(hub);

	return 0;

	return status;

}



static int hub_resume(struct usb_interface *intf)