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[media] exynos4-is: cleanup a define

Message ID 20131108095224.GJ27977@elgon.mountain (mailing list archive)
State New, archived
Headers show

Commit Message

Dan Carpenter Nov. 8, 2013, 9:52 a.m. UTC
This define is only used in s5pcsis_irq_handler():

	if ((status & S5PCSIS_INTSRC_NON_IMAGE_DATA) && pktbuf->data) {

The problem is that "status" is a 32 bit and (0xff << 28) is larger than
32 bits and that sets off a static checker warning.  I consulted with
Sylwester Nawrocki and the define should actually be (0xf << 28).

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Comments

Sylwester Nawrocki Nov. 8, 2013, 10:17 p.m. UTC | #1
(dropping some unrelated e-mail addresses from Cc)

On 11/08/2013 10:52 AM, Dan Carpenter wrote:
> This define is only used in s5pcsis_irq_handler():
>
> 	if ((status&  S5PCSIS_INTSRC_NON_IMAGE_DATA)&&  pktbuf->data) {
>
> The problem is that "status" is a 32 bit and (0xff<<  28) is larger than
> 32 bits and that sets off a static checker warning.  I consulted with
> Sylwester Nawrocki and the define should actually be (0xf<<  28).
>
> Signed-off-by: Dan Carpenter<dan.carpenter@oracle.com>

Thanks for the fix, patch added to my tree for v3.14.

> diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c
> index 9fc2af6..31dfc50 100644
> --- a/drivers/media/platform/exynos4-is/mipi-csis.c
> +++ b/drivers/media/platform/exynos4-is/mipi-csis.c
> @@ -91,7 +91,7 @@ MODULE_PARM_DESC(debug, "Debug level (0-2)");
>   #define S5PCSIS_INTSRC_ODD_BEFORE	(1<<  29)
>   #define S5PCSIS_INTSRC_ODD_AFTER	(1<<  28)
>   #define S5PCSIS_INTSRC_ODD		(0x3<<  28)
> -#define S5PCSIS_INTSRC_NON_IMAGE_DATA	(0xff<<  28)
> +#define S5PCSIS_INTSRC_NON_IMAGE_DATA	(0xf<<  28)
>   #define S5PCSIS_INTSRC_FRAME_START	(1<<  27)
>   #define S5PCSIS_INTSRC_FRAME_END	(1<<  26)
>   #define S5PCSIS_INTSRC_ERR_SOT_HS	(0xf<<  12)

--
Regards,
Sylwester
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Patch

diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c
index 9fc2af6..31dfc50 100644
--- a/drivers/media/platform/exynos4-is/mipi-csis.c
+++ b/drivers/media/platform/exynos4-is/mipi-csis.c
@@ -91,7 +91,7 @@  MODULE_PARM_DESC(debug, "Debug level (0-2)");
 #define S5PCSIS_INTSRC_ODD_BEFORE	(1 << 29)
 #define S5PCSIS_INTSRC_ODD_AFTER	(1 << 28)
 #define S5PCSIS_INTSRC_ODD		(0x3 << 28)
-#define S5PCSIS_INTSRC_NON_IMAGE_DATA	(0xff << 28)
+#define S5PCSIS_INTSRC_NON_IMAGE_DATA	(0xf << 28)
 #define S5PCSIS_INTSRC_FRAME_START	(1 << 27)
 #define S5PCSIS_INTSRC_FRAME_END	(1 << 26)
 #define S5PCSIS_INTSRC_ERR_SOT_HS	(0xf << 12)