[PATCH 1/1] dma: imx-sdma: buf_tail should be initialize in prepare function

[Richard Zhao]

On Thu, May 24, 2012 at 11:33:58AM +0800, Shawn Guo wrote:
> On Thu, May 24, 2012 at 11:27:00AM +0800, Richard Zhao wrote:
> > > root at linaro-developer:~# aplay audio8k16S.wav
> > > Playing WAVE 'audio8k16S.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Stere
> > > o
> > > ^Z
> > > [1]+  Stopped                 aplay audio8k16S.wav
> > > root at linaro-developer:~# fg
> > > aplay audio8k16S.wav
> > > underrun!!! (at least 2034.382 ms long)
> > Does the audio playback recover? Without the patch, sometimes the
> > playback will have distortion and play too fast.
> > 
> No, it does not recover.
Maybe it's not the same issue. It do recover on imx6q sabrelite board.
And from source code, it do be a bug.

Thanks
Richard
> 
> -- 
> Regards,
> Shawn
>