[alsa-devel] [PATCH v2] ASoC: PXA: Fix oops in __pxa2xx_pcm_prepare

[Mark Brown]

On Sat, Apr 02, 2011 at 10:54:47AM +0300, Vasily Khoruzhick wrote:
> 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.

Applied, thanks.