linux-kernel - [PATCH 08/72] ALSA: hda - bug fix on return value when getting HDMI ELD info

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Date:	Thu, 18 Apr 2013 10:15:53 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Mengdong Lin <mengdong.lin@...el.com>,
	Takashi Iwai <tiwai@...e.de>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 08/72] ALSA: hda - bug fix on return value when getting HDMI ELD info

3.5.7.11 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mengdong Lin <mengdong.lin@...el.com>

commit 2ef5692efad330b67a234e2c49edad38538751e7 upstream.

In function snd_hdmi_get_eld(), the variable 'ret' should be initialized to 0.
Otherwise it will be returned uninitialized as non-zero after ELD info is got
successfully. Thus hdmi_present_sense() will always assume ELD info is invalid
by mistake, and /proc file system cannot show the proper ELD info.

Signed-off-by: Mengdong Lin <mengdong.lin@...el.com>
Acked-by: David Henningsson <david.henningsson@...onical.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/pci/hda/hda_eld.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/pci/hda/hda_eld.c b/sound/pci/hda/hda_eld.c
index 4c054f4..86f6468 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -322,7 +322,7 @@ int snd_hdmi_get_eld(struct hdmi_eld *eld,
 		     struct hda_codec *codec, hda_nid_t nid)
 {
 	int i;
-	int ret;
+	int ret = 0;
 	int size;
 	unsigned char *buf;
 
-- 
1.8.1.2

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