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| author | Alban Bedel <alban.bedel@avionic-design.de> | 2013-08-11 19:59:19 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-09-02 11:49:56 +0530 |
| commit | f3287a5206cae1244601d50a4d2a9a96a521c1ee (patch) | |
| tree | b963749b7277eaaa080c4b201adb8a7343421ec7 /drivers/dma/amba-pl08x.c | |
| parent | 5110e51d127221c93f331841e601612b187b60f4 (diff) | |
| download | lwn-f3287a5206cae1244601d50a4d2a9a96a521c1ee.tar.gz lwn-f3287a5206cae1244601d50a4d2a9a96a521c1ee.zip | |
dmaengine: PL08x: Fix reading the byte count in cctl
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>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 4e4c3df7f151..6b9cba2fd7f1 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; |