From: Alan Stern <stern@rowland.harvard.edu>
Date: Fri, 4 May 2007 15:51:25 +0000 (-0400)
Subject: USB: Implement PM FREEZE and PRETHAW
X-Git-Tag: v2.6.23-rc1~1083^2~138
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d461095ef6967324bc5da5d65d23ad27fc604f9;p=pandora-kernel.git

USB: Implement PM FREEZE and PRETHAW

This patch (as884) finally implements the time-saving semantics
possible with the Power Management FREEZE and PRETHAW events.  Their
proper handling requires only that devices be quiesced, with
interrupts and DMA turned off; non-root USB devices don't actually
need to be put in a suspended state.  The patch checks and avoids
doing the suspend call when possible.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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