kzalloc() can return NULL if it fails, and then we will be dereferencing
a NULL pointer.

Signed-off-by: Sudip Mukherjee <[email protected]>
---
 sound/soc/codecs/hdac_hdmi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index d155262..205f2c2 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -200,6 +200,8 @@ static int hdac_hdmi_set_hw_params(struct snd_pcm_substream 
*substream,
        }
 
        dd = kzalloc(sizeof(*dd), GFP_KERNEL);
+       if (!dd)
+               return -ENOMEM;
        dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
                        params_channels(hparams), params_format(hparams),
                        24, 0);
-- 
1.9.1

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