On Wed, 26 Dec 2018 18:57:47 +0100, Pierre-Louis Bossart wrote:

On 12/25/18 8:29 PM, Kangjie Lu wrote:

...

snd_pcm_lib_malloc_pages() may fail, so let's check its status and return its error code upstream.

Acked-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com

This fixes a potential kernel Oops. Mark, please put Cc to stable when applying.

thanks,

Takashi

...

Signed-off-by: Kangjie Lu kjlu@umn.edu

sound/soc/intel/atom/sst-mfld-platform-pcm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c index afc559866095..91a2436ce952 100644 --- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c @@ -399,7 +399,13 @@ static int sst_media_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) {

• snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));

• int ret;
• ret =

• snd_pcm_lib_malloc_pages(substream,
  

• 		params_buffer_bytes(params));
  

• if (ret)

• return ret;
  

  memset(substream->runtime->dma_area, 0, params_buffer_bytes(params)); return 0; }