[PATCH 08/13] ASoC: generic-dmaengine-pcm: Clear slave_config memory

[Lee Jones <lee.jones@linaro.org>]

We currently assume that the DMA Slave Config will be fully populated
by the platform, however some DMA Engines make decisions based on zero
(default) flags such as DMA_SLAVE_BUSWIDTH_UNDEFINED and as this is a
static declaration we need to memset it to clear the data area.

Cc: alsa-devel@alsa-project.org
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 sound/soc/soc-generic-dmaengine-pcm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index ee07903..6ad4c7a 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -90,6 +90,8 @@ static int dmaengine_pcm_hw_params(struct snd_pcm_substream *substream,
 	struct dma_slave_config slave_config;
 	int ret;
 
+	memset(&slave_config, 0, sizeof(slave_config));
+
 	if (!pcm->config)
 		prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
 	else
-- 
1.8.1.2