Commit ffc26918 authored Jan 08, 2007 by Frank Mandarino Committed by Jaroslav Kysela Feb 09, 2007

[ALSA] ASoC at91 - Fix NULL pointer dereference in at91_i2s_shutdown



This patch fixes a NULL pointer exception which occurs when a
substream is opened and immediately closed.

Signed-off-by: Frank Mandarino <fmandarino@endrelia.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

parent ad5e7737

sound/soc/at91/at91-i2s.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -296,6 +296,13 @@ static int at91_i2s_startup(struct snd_pcm_substream *substream)
		ssc_p->dir_mask \|= dir_mask;
		spin_unlock_irq(&ssc_p->lock);

		/*
		* dma_data is not set until hw_params() is called and
		* shutdown() depends on this value being NULL if hw_params()
		* was not called.
		*/
		rtd->cpu_dai->dma_data = NULL;

		return 0;
		}