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