[PATCH v2 1/2] OMAP2+: DMA: Workaround for invalid source position

* P?ter Ujfalusi [off-list ref] [111129 04:26]:

On Thursday 10 November 2011 15:02:04 Jarkko Nikula wrote:

quoted

On 11/10/2011 02:46 PM, Jarkko Nikula wrote:

quoted

On 11/07/2011 11:33 AM, Peter Ujfalusi wrote:

I think this is enough:

if (unlikely(p->dma_read(CDAC, lch) == 0))
offset = p->dma_read(CSSA, lch);

I suppose offset is ok for normal case as it is already read (twise)
above.

Or actually my proposal could have a race if CDAC changes between CSAC
read and CDAC read. In that case it's better to re-read CSAC as your
patch does after CDAC test and give to both:

Reviewed-by: Jarkko Nikula <jarkko.nikula@bitmer.com>

Tony, have you taken this patch? I failed to find it in the l-o tree...

Sorry for the delay, applying both into fixes-non-critical.

Tony