diff options
| -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; } |