mirror of https://gitee.com/openkylin/linux.git
ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free
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>
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@ -75,7 +75,7 @@ int __pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream)
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{
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struct pxa2xx_runtime_data *rtd = substream->runtime->private_data;
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if (rtd && rtd->params)
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if (rtd && rtd->params && rtd->params->drcmr)
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*rtd->params->drcmr = 0;
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snd_pcm_set_runtime_buffer(substream, NULL);
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