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[4/5] media: platform: s5p-jpeg: fix number of components macro

Message ID 1502191628-11958-4-git-send-email-andrzej.p@samsung.com (mailing list archive)
State Not Applicable
Headers show

Commit Message

Andrzej Pietrasiewicz Aug. 8, 2017, 11:27 a.m. UTC
The value to be processed must be first masked and then shifted,
not the other way round.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
---
 drivers/media/platform/s5p-jpeg/jpeg-regs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

On 08/08/2017 01:27 PM, Andrzej Pietrasiewicz wrote:
> The value to be processed must be first masked and then shifted,
> not the other way round.
> 
> Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
> ---
>   drivers/media/platform/s5p-jpeg/jpeg-regs.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/s5p-jpeg/jpeg-regs.h b/drivers/media/platform/s5p-jpeg/jpeg-regs.h
> index 1870400..df790b1 100644
> --- a/drivers/media/platform/s5p-jpeg/jpeg-regs.h
> +++ b/drivers/media/platform/s5p-jpeg/jpeg-regs.h
> @@ -371,7 +371,7 @@
>   #define EXYNOS4_NF_SHIFT			16
>   #define EXYNOS4_NF_MASK				0xff
>   #define EXYNOS4_NF(x)				\
> -	(((x) << EXYNOS4_NF_SHIFT) & EXYNOS4_NF_MASK)
> +	(((x) & EXYNOS4_NF_MASK) << EXYNOS4_NF_SHIFT)

I'm going to add below tag when applying this patch.

Fixes: 6c96dbbc2aa9f5b4a ("[media] s5p-jpeg: add support for 5433")
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Patch

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-regs.h b/drivers/media/platform/s5p-jpeg/jpeg-regs.h
index 1870400..df790b1 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-regs.h
+++ b/drivers/media/platform/s5p-jpeg/jpeg-regs.h
@@ -371,7 +371,7 @@ 
 #define EXYNOS4_NF_SHIFT			16
 #define EXYNOS4_NF_MASK				0xff
 #define EXYNOS4_NF(x)				\
-	(((x) << EXYNOS4_NF_SHIFT) & EXYNOS4_NF_MASK)
+	(((x) & EXYNOS4_NF_MASK) << EXYNOS4_NF_SHIFT)
 
 /* JPEG quantizer table register */
 #define EXYNOS4_QTBL_CONTENT(n)	(0x100 + (n) * 0x40)