From: Alban Bedel alban.bedel@avionic-design.de
There are more fields than just SWIDTH in CH_CONTROL register, so read register value must be masked in addition to shifting.
Signed-off-by: Alban Bedel alban.bedel@avionic-design.de Signed-off-by: Tomasz Figa tomasz.figa@gmail.com Reviewed-by: Linus Walleij linus.walleij@linaro.org --- drivers/dma/amba-pl08x.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 4e4c3df..6b9cba2 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -480,6 +480,8 @@ static inline u32 get_bytes_in_cctl(u32 cctl) /* The source width defines the number of bytes */ u32 bytes = cctl & PL080_CONTROL_TRANSFER_SIZE_MASK;
+ cctl &= PL080_CONTROL_SWIDTH_MASK; + switch (cctl >> PL080_CONTROL_SWIDTH_SHIFT) { case PL080_WIDTH_8BIT: break; @@ -498,6 +500,8 @@ static inline u32 get_bytes_in_cctl_pl080s(u32 cctl, u32 cctl1) /* The source width defines the number of bytes */ u32 bytes = cctl1 & PL080S_CONTROL_TRANSFER_SIZE_MASK;
+ cctl &= PL080_CONTROL_SWIDTH_MASK; + switch (cctl >> PL080_CONTROL_SWIDTH_SHIFT) { case PL080_WIDTH_8BIT: break;