USB: add RESET_RESUME for webcams shown to be quirky
authorOliver Neukum <oneukum@suse.de>
Tue, 13 Sep 2011 06:42:21 +0000 (08:42 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 11 Nov 2011 17:35:37 +0000 (09:35 -0800)
commita8de96f08123ea80b04264e9faecfa34118ce4d8
treeef8d9eaf12859aa668db8bbda1e154a223eef63f
parent2305a1169c91eee50fe91204692eebea8dce6b6c
USB: add RESET_RESUME for webcams shown to be quirky

commit 2394d67e446bf616a0885167d5f0d397bdacfdfc upstream.

The new runtime PM code has shown that many webcams suffer
from a race condition that may crash them upon resume.
Runtime PM is especially prone to show the problem because
it retains power to the cameras at all times. However
system suspension may also crash the devices and retain
power to the devices.
The only way to solve this problem without races is in
usbcore with the RESET_RESUME quirk.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/core/quirks.c