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| author | Frank Mandarino <fmandarino@endrelia.com> | 2007-01-08 10:58:47 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-02-09 09:02:54 +0100 |
| commit | ffc26918ab5674b286a4bc07dac7e011cea83e97 (patch) | |
| tree | 86fb6769a475d14498c694653b7b86e90b0d951c | |
| parent | ad5e773750aeae3ad980f94b9f3cecad5af7c53d (diff) | |
| download | op-kernel-dev-ffc26918ab5674b286a4bc07dac7e011cea83e97.zip op-kernel-dev-ffc26918ab5674b286a4bc07dac7e011cea83e97.tar.gz | |
[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>
| -rw-r--r-- | sound/soc/at91/at91-i2s.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/at91/at91-i2s.c b/sound/soc/at91/at91-i2s.c index 203e694..876d391 100644 --- a/sound/soc/at91/at91-i2s.c +++ b/sound/soc/at91/at91-i2s.c @@ -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; } |
