[PATCH AUTOSEL 4.19 30/84] ASoC: topology: Check return value for soc_tplg_pcm_create()

[Sasha Levin]

From: Dragos Tarcatu <dragos_tarcatu@xxxxxxxxxx>

[ Upstream commit a3039aef52d9ffeb67e9211899cd3e8a2953a01f ]

The return value of soc_tplg_pcm_create() is currently not checked
in soc_tplg_pcm_elems_load(). If an error is to occur there, the
topology ignores it and continues loading.

Fix that by checking the status and rejecting the topology on error.

Reviewed-by: Ranjani Sridharan <ranjani.sridharan@xxxxxxxxxxxxxxx>
Signed-off-by: Dragos Tarcatu <dragos_tarcatu@xxxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20191210003939.15752-3-pierre-louis.bossart@xxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 sound/soc/soc-topology.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 88a7e860b175..069f38fbf07b 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1890,6 +1890,7 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
 	int count = hdr->count;
 	int i;
 	bool abi_match;
+	int ret;
 
 	if (tplg->pass != SOC_TPLG_PASS_PCM_DAI)
 		return 0;
@@ -1926,7 +1927,12 @@ static int soc_tplg_pcm_elems_load(struct soc_tplg *tplg,
 		}
 
 		/* create the FE DAIs and DAI links */
-		soc_tplg_pcm_create(tplg, _pcm);
+		ret = soc_tplg_pcm_create(tplg, _pcm);
+		if (ret < 0) {
+			if (!abi_match)
+				kfree(_pcm);
+			return ret;
+		}
 
 		/* offset by version-specific struct size and
 		 * real priv data size
-- 
2.20.1