sh_desc->hw.tcr is controlling data size,
and register TCR is controlling data transfer count
which was xmit_shift'ed value of hw.tcr.
Current sh_dmae_get_partial() is calculating in different unit.
This patch fixes it.
Cc: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto...@renesas.com>
---
>> Guennadi
Can you please review this patch ?
drivers/dma/sh/shdma.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index b70709b..d670b8b 100644
--- a/drivers/dma/sh/shdma.c
+++ b/drivers/dma/sh/shdma.c
@@ -388,8 +388,8 @@ static size_t sh_dmae_get_partial(struct shdma_chan *schan,
shdma_chan);
struct sh_dmae_desc *sh_desc = container_of(sdesc,
struct sh_dmae_desc, shdma_desc);
- return (sh_desc->hw.tcr - sh_dmae_readl(sh_chan, TCR)) <<
- sh_chan->xmit_shift;
+ return sh_desc->hw.tcr -
+ (sh_dmae_readl(sh_chan, TCR) << sh_chan->xmit_shift);
}
/* Called from error IRQ or NMI */
--
1.7.9.5
--
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