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k3dma: Fix hisi burst clipping 

Max burst len is a 4-bit field, but at the moment it's clipped with
a 5-bit constant... reduce it to that which can be expressed

Cc: Zhangfei Gao <zhangfei.gao@linaro.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Andy Green <andy@warmcat.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
[jstultz: Forward ported to mainline]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Green 2016-08-29 10:30:47 -07:00 committed by Vinod Koul
parent 29b4817d40
commit 6c28a90fb3
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/k3dma.c
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@ -551,7 +551,7 @@ static int k3_dma_config(struct dma_chan *chan,
c->ccfg |= (val << 12) | (val << 16);
if ((maxburst == 0) || (maxburst > 16))
val = 16;
val = 15;
else
val = maxburst - 1;
c->ccfg |= (val << 20) | (val << 24);