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There are many set but not used warnings under drivers/gpu/drm/amd when compiling with the latest upstream mainline GCC: drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c:305:18: warning: variable ‘p’ set but not used [-Wunused-but-set-variable=] drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h:103:26: warning: variable ‘internal_reg_offset’ set but not used [-Wunused-but-set-variable=] ... drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.h:164:26: warning: variable ‘internal_reg_offset’ set but not used [-Wunused-but-set-variable=] ... drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:445:13: warning: variable ‘pipe_idx’ set but not used [-Wunused-but-set-variable=] drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:875:21: warning: variable ‘pipe_idx’ set but not used [-Wunused-but-set-variable=] Remove the variables actually not used or add __maybe_unused attribute for the variables actually used to fix them, compile tested only. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>