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author | Lucas De Marchi <lucas.demarchi@intel.com> | 2022-06-28 12:10:16 -0700 |
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committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2022-06-29 17:42:28 -0700 |
commit | 6fb5ee7cec06266a29f25ecc01a23b9d107f64e1 (patch) | |
tree | 286b3ec743d32cac4efdae9630b01980afe8728c /drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | |
parent | 5f278dbd540b7548bc5193552e6d478255c14c2d (diff) |
iosys-map: Add per-word write
Like was done for read, provide the equivalent for write. Even if
current users are not in the hot path, this should future-proof it.
v2:
- Remove default from _Generic() - callers wanting to write more
than u64 should use iosys_map_memcpy_to()
- Add WRITE_ONCE() cases dereferencing the pointer when using system
memory
v3:
- Fix precedence issue when casting inside WRITE_ONCE(). By not using ()
around vaddr__ the offset was not part of the cast, but rather added
to it, producing a wrong address
- Remove compiletime_assert() as WRITE_ONCE() already contains it
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Reviewed-by: Christian König <christian.koenig@amd.com> # v1
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220628191016.3899428-2-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h')
0 files changed, 0 insertions, 0 deletions