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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2010-05-21 15:30:12 +0000
committerPaul Mundt <lethal@linux-sh.org>2010-05-22 17:06:35 +0900
commit9255f1deec151ac0e84871d06bc27406cb81f26f (patch)
treeb4e454e2339207a1ce3bbe826f624c1f80323487 /drivers/dma
parent7a5c106a0e8fd03a806d0da77eef10b4045c43a6 (diff)
downloadop-kernel-dev-9255f1deec151ac0e84871d06bc27406cb81f26f.zip
op-kernel-dev-9255f1deec151ac0e84871d06bc27406cb81f26f.tar.gz
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/shdma.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 427d514..a2a519f 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -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)
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