ASoC: hdac_hdmi: fix possible NULL dereference

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

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index d1552620257f1c838f2cc9c1d81e0274c360d1f4..205f2c27263d41b119f78ab614189cf4aea9084c 100644 (file)
--- 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);