From: Kangjie Lu <kjlu@umn.edu>
Date: Wed, 26 Dec 2018 02:29:48 +0000 (-0600)
Subject: ASoC: atom: fix a missing check of snd_pcm_lib_malloc_pages
X-Git-Tag: v4.9.154~33
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d963c98d796f4e065579b234597f838164b8003;p=thirdparty%2Fkernel%2Fstable.git

ASoC: atom: fix a missing check of snd_pcm_lib_malloc_pages

commit 44fabd8cdaaa3acb80ad2bb3b5c61ae2136af661 upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index f5a8050351b53..e83e314a76a53 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;
 }