ASoC: generic-dmaengine-pcm: Clear slave_config memory

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.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index ee0790337ec97d9eefddd6fc78902e9024e46f37..6ad4c7a47f5da0f3513e9c3c962a4435420fa1f5 100644 (file)
--- 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