Commit 9255f1de authored May 21, 2010 by Guennadi Liakhovetski Committed by Paul Mundt May 22, 2010

sh: guard cookie consistency across termination in the DMA driver



If all descriptors on a channel are terminated or the channel is released,
update the completed cookie counter to match the last cookie. This prevents
inconsistency warning on resumed DMA operation.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

parent 7a5c106a

drivers/dma/shdma.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -722,6 +722,10 @@ static void sh_dmae_chan_ld_cleanup(struct sh_dmae_chan *sh_chan, bool all)
		{
		while (__ld_cleanup(sh_chan, all))
		;

		if (all)
		/* Terminating - forgive uncompleted cookies */
		sh_chan->completed_cookie = sh_chan->common.cookie;
		}

		static void sh_chan_xfer_ld_queue(struct sh_dmae_chan *sh_chan)

Admin message