ASoC: mop500_ab8500: Add a NULL pointer check in mop500_ab8500_machine_init()

Avoid possible crash (NULL pointer dereference) by making
sure that dem_kzalloc() is successful.

Signed-off-by: Rajan Vaja <rajan.vaja@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/soc/ux500/mop500_ab8500.c b/sound/soc/ux500/mop500_ab8500.c
index b81a7a4c938b..85d810d7667c 100644
--- a/sound/soc/ux500/mop500_ab8500.c
+++ b/sound/soc/ux500/mop500_ab8500.c
@@ -372,6 +372,10 @@ int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
         /* Create driver private-data struct */
         drvdata = devm_kzalloc(dev, sizeof(struct mop500_ab8500_drvdata),
                         GFP_KERNEL);
+
+        if (!drvdata)
+                return -ENOMEM;
+
         snd_soc_card_set_drvdata(rtd->card, drvdata);
 
         /* Setup clocks */