From 11da21a79048472a14b201120c0c50b10060220b Mon Sep 17 00:00:00 2001
From: Seth Forshee <seth.forshee@gmail.com>
Date: Fri, 2 Feb 2007 17:14:19 +0100
Subject: [PATCH] [ALSA] soc - 0.13 ASoC DAPM bug fix for unnamed streams

This patch fixes a bug whereby an unnamed stream would cause a NULL
pointer ref in snd_soc_dapm_stream_event().

Signed-off-by: Seth Forshee <seth.forshee@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
---
 sound/soc/soc-dapm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 5c2a34956a5d..d0162a4cb7fd 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -1239,6 +1239,9 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec,
 {
 	struct snd_soc_dapm_widget *w;
 
+	if (stream == NULL)
+		return 0;
+
 	mutex_lock(&codec->mutex);
 	list_for_each_entry(w, &codec->dapm_widgets, list)
 	{
-- 
2.20.1