diff options
| author |   Maxime Ripard <maxime.ripard@free-electrons.com> | 2014-07-30 10:30:21 +0200 |
|---|---|---|
| committer |   Vinod Koul <vinod.koul@intel.com> | 2014-07-30 19:14:17 +0530 |
| commit | 92e4a3bf3812b0b0d06c6736fe4d83e1442640ef (patch) | |
| tree | 3d91eb776b1321734283149faf2ae17de7fa787e /drivers/dma/sun6i-dma.c | |
| parent | dmaengine: of: kconfig: select DMA_ENGINE when DMA_OF is selected (diff) | |
| download | linux-dev-92e4a3bf3812b0b0d06c6736fe4d83e1442640ef.tar.xz linux-dev-92e4a3bf3812b0b0d06c6736fe4d83e1442640ef.zip | |
dmaengine: sun6i: Remove switch statement from buswidth convertion routine
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>
Diffstat (limited to 'drivers/dma/sun6i-dma.c')
| -rw-r--r-- | drivers/dma/sun6i-dma.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index c771d90b8ded..609c5d8cb947 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -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; } |