From: Wu Fengguang <fengguang.wu@intel.com>
Date: Fri, 17 Jul 2009 08:49:19 +0000 (+0800)
Subject: ALSA: hda - add bounds checking for the codec command fields
X-Git-Tag: v2.6.32-rc1~732^2~13^2~74
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6430aeeb30b478d4ef25f988b1fde6f6ae83adb5;p=pandora-kernel.git

ALSA: hda - add bounds checking for the codec command fields

A recent bug involves passing auto detected >0x7f NID to codec command,
creating an invalid codec addr field, and finally lead to cmd timeout
and fall back into single command mode. Jaroslav fixed that bug in
alc880_parse_auto_config().

It would be safer to further check the bounds of all cmd fields.

Cc: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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