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>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index 278248b8f22a..9d93f02c6285 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);