From: Ingo Molnar <mingo@elte.hu>
Date: Sun, 6 Jan 2008 20:09:53 +0000 (+0100)
Subject: hda_intel suspend latency: shorten codec read
X-Git-Tag: v2.6.24-rc7~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=57a04513cb35086d54bcb2cb92e6627fc8fa0fae;p=pandora-kernel.git

hda_intel suspend latency: shorten codec read

not sleeping for every codec read/write but doing a short udelay and
a conditional reschedule has cut suspend+resume latency by about 1
second on my T60.

The patch also fixes the unexpected codec-connection errors that
happen more often in the new power-save mode:
    http://lkml.org/lkml/2007/11/8/255
    http://bugzilla.kernel.org/show_bug.cgi?id=9332

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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