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ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free

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Check for rtd->params->drcmr != NULL before accessing it.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Daniel Mack 2009-07-08 19:24:26 +02:00 committed by Mark Brown
parent 637a935aab
commit b7d4de7ff0
1 changed files with 1 additions and 1 deletions
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2
sound/arm/pxa2xx-pcm-lib.c
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@ -75,7 +75,7 @@ int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream)
{ {
struct pxa2xx_runtime_data *rtd = substream->runtime->private_data; struct pxa2xx_runtime_data *rtd = substream->runtime->private_data;
if (rtd && rtd->params) if (rtd && rtd->params && rtd->params->drcmr)
*rtd->params->drcmr = 0; *rtd->params->drcmr = 0;
snd_pcm_set_runtime_buffer(substream, NULL); snd_pcm_set_runtime_buffer(substream, NULL);