diff mbox series

drm/fourcc: Fix undefined left shift in DRM_FORMAT_BIG_ENDIAN macros

Message ID 20191018163926.598570-1-ajax@redhat.com (mailing list archive)
State New, archived
Headers show
Series drm/fourcc: Fix undefined left shift in DRM_FORMAT_BIG_ENDIAN macros | expand

Commit Message

Adam Jackson Oct. 18, 2019, 4:39 p.m. UTC
1<<31 is undefined because it's a signed int and C is terrible.

Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>
---
 include/uapi/drm/drm_fourcc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Ville Syrjälä Oct. 18, 2019, 5:07 p.m. UTC | #1
On Fri, Oct 18, 2019 at 12:39:26PM -0400, Adam Jackson wrote:
> 1<<31 is undefined because it's a signed int and C is terrible.
> 
> Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

Missing teh sob.

> ---
>  include/uapi/drm/drm_fourcc.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 3feeaa3f987a..c06d34559fab 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -69,7 +69,7 @@ extern "C" {
>  #define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
>  				 ((__u32)(c) << 16) | ((__u32)(d) << 24))
>  
> -#define DRM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
> +#define DRM_FORMAT_BIG_ENDIAN (1U<<31) /* format is big endian instead of little endian */
>  
>  /* Reserve 0 for the invalid format specifier */
>  #define DRM_FORMAT_INVALID	0
> -- 
> 2.23.0
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
diff mbox series

Patch

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 3feeaa3f987a..c06d34559fab 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -69,7 +69,7 @@  extern "C" {
 #define fourcc_code(a, b, c, d) ((__u32)(a) | ((__u32)(b) << 8) | \
 				 ((__u32)(c) << 16) | ((__u32)(d) << 24))
 
-#define DRM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
+#define DRM_FORMAT_BIG_ENDIAN (1U<<31) /* format is big endian instead of little endian */
 
 /* Reserve 0 for the invalid format specifier */
 #define DRM_FORMAT_INVALID	0