]> git.karo-electronics.de Git - karo-tx-linux.git/commit
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 17:42:38 +0000 (09:42 -0800)
commite7f5326684730b0bed49e6df926b36bf8e0d8ac7
treedd562e6556f76450bc6afa194e1ef7c9965ddfdc
parent98e918a7a5dc4a333339ccf26aba08e343a8b26e
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