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Commit cd930c93 authored by Alan Stern's avatar Alan Stern Committed by Greg Kroah-Hartman
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USB: EHCI: add a short delay to the bus_suspend routine 



This patch (as1031) adds a short delay to the bus-suspend routine in
ehci-hcd.  Without it some devices disconnect when they should
suspend.

Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Acked-by: default avatarDavid Brownell <david-b@pacbell.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent f8fa7571

drivers/usb/host/ehci-hub.c

+4 −0
Original line number Diff line number Diff line
@@ -172,6 +172,10 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) 
		}

	}



	/* Apparently some devices need a >= 1-uframe delay here */

	if (ehci->bus_suspended)

		udelay(150);



	/* turn off now-idle HC */

	ehci_halt (ehci);

	hcd->state = HC_STATE_SUSPENDED;