It's possible for hw_params to be called two times. So add NULL
check to prevent memory leak.
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@xxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
---
sound/soc/codecs/hdac_hdmi.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
index 2884dbf..d2a2e18 100644
--- a/sound/soc/codecs/hdac_hdmi.c
+++ b/sound/soc/codecs/hdac_hdmi.c
@@ -405,9 +405,13 @@ static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
return -ENODEV;
}
- dd = kzalloc(sizeof(*dd), GFP_KERNEL);
- if (!dd)
- return -ENOMEM;
+ dd = snd_soc_dai_get_dma_data(dai, substream);
+ if (!dd) {
+ 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);
@@ -433,9 +437,11 @@ static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
AC_VERB_SET_STREAM_FORMAT, 0);
dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
- snd_soc_dai_set_dma_data(dai, substream, NULL);
- kfree(dd);
+ if (dd) {
+ snd_soc_dai_set_dma_data(dai, substream, NULL);
+ kfree(dd);
+ }
return 0;
}
--
1.9.1
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