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author | Carlos Llamas <cmllamas@google.com> | 2022-06-21 20:39:21 +0000 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2022-06-29 14:50:51 -0400 |
commit | 20b8264394b33adb1640a485a62a84bc1388b6a3 (patch) | |
tree | 762f50b392dca80778582d3be1581cf210c699c8 /include | |
parent | bbba251577b27422ebe173e1bd006424d6a8cfb3 (diff) | |
download | linux-stable-20b8264394b33adb1640a485a62a84bc1388b6a3.tar.gz linux-stable-20b8264394b33adb1640a485a62a84bc1388b6a3.tar.bz2 linux-stable-20b8264394b33adb1640a485a62a84bc1388b6a3.zip |
drm/fourcc: fix integer type usage in uapi header
Kernel uapi headers are supposed to use __[us]{8,16,32,64} types defined
by <linux/types.h> as opposed to 'uint32_t' and similar. See [1] for the
relevant discussion about this topic. In this particular case, the usage
of 'uint64_t' escaped headers_check as these macros are not being called
here. However, the following program triggers a compilation error:
#include <drm/drm_fourcc.h>
int main()
{
unsigned long x = AMD_FMT_MOD_CLEAR(RB);
return 0;
}
gcc error:
drm.c:5:27: error: ‘uint64_t’ undeclared (first use in this function)
5 | unsigned long x = AMD_FMT_MOD_CLEAR(RB);
| ^~~~~~~~~~~~~~~~~
This patch changes AMD_FMT_MOD_{SET,CLEAR} macros to use the correct
integer types, which fixes the above issue.
[1] https://lkml.org/lkml/2019/6/5/18
Fixes: 8ba16d599374 ("drm/fourcc: Add AMD DRM modifiers.")
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Reviewed-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/uapi/drm/drm_fourcc.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index f1972154a594..0980678d502d 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -1444,11 +1444,11 @@ drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier) #define AMD_FMT_MOD_PIPE_MASK 0x7 #define AMD_FMT_MOD_SET(field, value) \ - ((uint64_t)(value) << AMD_FMT_MOD_##field##_SHIFT) + ((__u64)(value) << AMD_FMT_MOD_##field##_SHIFT) #define AMD_FMT_MOD_GET(field, value) \ (((value) >> AMD_FMT_MOD_##field##_SHIFT) & AMD_FMT_MOD_##field##_MASK) #define AMD_FMT_MOD_CLEAR(field) \ - (~((uint64_t)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT)) + (~((__u64)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT)) #if defined(__cplusplus) } |