From 97c96c076b8ef86533f2427ea145a9cd0ec5564f Mon Sep 17 00:00:00 2001 From: Vasily Khoruzhick Date: Sat, 2 Apr 2011 10:54:47 +0300 Subject: ASoC: PXA: Fix oops in __pxa2xx_pcm_prepare pxa2xx_pcm_hw_free frees dma channel and sets prtd->dma_ch to -1, but does not set prtd->params to NULL, so if pxa2xx_pcm_hw_params will be called immediately, it leaves prtd->dma_ch initialized with -1, and it results in oops in __pxa2xx_pcm_prepare. This bug is triggered via SDL. This patch adds check for prtd->dma_ch to __pxa2xx_pcm_prepare and cleans prtd->params, so now it works properly. Signed-off-by: Vasily Khoruzhick Signed-off-by: Mark Brown --- sound/soc/pxa/pxa2xx-pcm.c | 1 + 1 file changed, 1 insertion(+) (limited to 'sound/soc/pxa/pxa2xx-pcm.c') diff --git a/sound/soc/pxa/pxa2xx-pcm.c b/sound/soc/pxa/pxa2xx-pcm.c index 02fb664..2ce0b2d 100644 --- a/sound/soc/pxa/pxa2xx-pcm.c +++ b/sound/soc/pxa/pxa2xx-pcm.c @@ -65,6 +65,7 @@ static int pxa2xx_pcm_hw_free(struct snd_pcm_substream *substream) if (prtd->dma_ch >= 0) { pxa_free_dma(prtd->dma_ch); prtd->dma_ch = -1; + prtd->params = NULL; } return 0; -- cgit v1.1