From: Alban Bedel <alban.be...@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.be...@avionic-design.de>
Signed-off-by: Tomasz Figa <tomasz.f...@gmail.com>
---
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 0da5539..bb3b36b 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -471,6 +471,8 @@ 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;
@@ -489,6 +491,8 @@ 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;
--
1.8.2.1
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