From: Greg Thelen <gthelen@google.com>
Date: Mon, 13 Jun 2011 14:45:45 +0000 (-0700)
Subject: ALSA: hda: check make_exec_verb() return value
X-Git-Tag: v3.1-rc1~271^2^2~83
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9857edfd4db0dc879f786e042f24900fd683b0ac;p=pandora-kernel.git

ALSA: hda: check make_exec_verb() return value

If given a -1 cmd parameter then make_exec_verb() returns -1 without
setting the res output value.

Prior to this change snd_hda_codec_read() assumed that make_exec_verb()
unconditionally set res regardless of the cmd value.

This change explicitly checks the make_exec_verb() return value before
consuming the potentially unset res value.

Signed-off-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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