Messages in this thread | | | Date | Wed, 06 Nov 2013 12:55:35 +0100 | From | Lars-Peter Clausen <> | Subject | Re: [alsa-devel] [PATCH 08/13] ASoC: generic-dmaengine-pcm: Clear slave_config memory |
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On 11/06/2013 11:16 AM, Lee Jones wrote: > 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>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Thanks.
> --- > 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 >
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