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dmaengine: sun6i: Remove switch statement from buswidth convertion routine

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Since the conversion routine is quite trivial, we don't need this switch, and
we can just use a simple calculation.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Maxime Ripard 2014-07-30 10:30:21 +02:00 committed by Vinod Koul
parent 2795eedf2f
commit 92e4a3bf38
1 changed files with 3 additions and 12 deletions
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15
drivers/dma/sun6i-dma.c
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@ -248,20 +248,11 @@ static inline int convert_burst(u32 maxburst, u8 *burst)
static inline int convert_buswidth(enum dma_slave_buswidth addr_width, u8 *width)
{
switch (addr_width) {
case DMA_SLAVE_BUSWIDTH_1_BYTE:
*width = 0;
break;
case DMA_SLAVE_BUSWIDTH_2_BYTES:
*width = 1;
break;
case DMA_SLAVE_BUSWIDTH_4_BYTES:
*width = 2;
break;
default:
if ((addr_width < DMA_SLAVE_BUSWIDTH_1_BYTE) ||
(addr_width > DMA_SLAVE_BUSWIDTH_4_BYTES))
return -EINVAL;
}
*width = addr_width >> 1;
return 0;
}