Patch Upstream: ALSA: hda - bug fix on return value when getting HDMI ELD info

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commit: 2ef5692efad330b67a234e2c49edad38538751e7
From: Mengdong Lin <mengdong.lin@xxxxxxxxx>
Date: Thu, 28 Mar 2013 05:20:22 -0400
Subject: ALSA: hda - bug fix on return value when getting HDMI ELD info

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@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
 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 7dd8463..d0d7ac1 100644
--- a/sound/pci/hda/hda_eld.c
+++ b/sound/pci/hda/hda_eld.c
@@ -320,7 +320,7 @@ int snd_hdmi_get_eld(struct hda_codec *codec, hda_nid_t nid,
 		     unsigned char *buf, int *eld_size)
 {
 	int i;
-	int ret;
+	int ret = 0;
 	int size;
 
 	/*
-- 
1.7.10.4
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