From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Mon, 8 Feb 2010 18:18:16 +0000 (+0100)
Subject: PM: Allow USB devices to suspend/resume asynchronously
X-Git-Tag: v2.6.34-rc1~274^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=927bc9165d3cd01054b472f9b25d91a8707209c8;p=pandora-kernel.git

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 <rjw@sisk.pl>
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