ASoC: atom: fix a missing check of snd_pcm_lib_malloc_pages

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

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index afc5598660955a462f1f2bfdf45fe9905a23e339..91a2436ce9525aea53c537ba1f879456050fcc66 100644 (file)
--- 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;
 }