linux-kernel - [PATCH] ASoC: omap-pcm: Initialize DMA configuration

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Date:	Mon, 25 Apr 2016 11:10:07 -0500
From:	"J.D. Schroeder" <Linux.HWI@...min.com>
To:	<linux-kernel@...r.kernel.org>, <peter.ujfalusi@...com>,
	<lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>,
	<tiwai@...e.com>, <jarkko.nikula@...mer.com>,
	<alsa-devel@...a-project.org>, <linux-omap@...r.kernel.org>
CC:	Jim Lodes <jim.lodes@...min.com>,
	"J.D. Schroeder" <jay.schroeder@...min.com>
Subject: [PATCH] ASoC: omap-pcm: Initialize DMA configuration

From: Jim Lodes <jim.lodes@...min.com>

Initialize the dma_slave_config for PCM DMA transfers,
instead of leaving it uninitialized. Keeps previous data on
the stack from giving us invalid values in uninitialized
members of the config structure.

Signed-off-by: Jim Lodes <jim.lodes@...min.com>
Signed-off-by: J.D. Schroeder <jay.schroeder@...min.com>
---
 sound/soc/omap/omap-pcm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 99381a2..a84f677 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -82,6 +82,8 @@ static int omap_pcm_hw_params(struct snd_pcm_substream *substream,
 	struct dma_chan *chan;
 	int err = 0;
 
+	memset(&config, 0x00, sizeof(config));
+
 	dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
 	/* return if this is a bufferless transfer e.g.
-- 
1.9.1