From a40a3937222c728be925f2d78650cfe9b20be3f5 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 29 Oct 2013 11:59:31 +0100
Subject: ALSA: memalloc: NULL-initialize in snd_malloc_dev_iram()

dmab->area and addr fields should be cleared at the head of
snd_malloc_dev_iram() as especially dmab->area is used to indicate the
allocation failure / fallback.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index 278248b..9d93f02 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -172,6 +172,9 @@ static void snd_malloc_dev_iram(struct snd_dma_buffer *dmab, size_t size)
 	struct device *dev = dmab->dev.dev;
 	struct gen_pool *pool = NULL;
 
+	dmab->area = NULL;
+	dmab->addr = 0;
+
 	if (dev->of_node)
 		pool = of_get_named_gen_pool(dev->of_node, "iram", 0);
 
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