../drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1082:2: warning: variable 'r' is used uninitialized whenever 'while' loop exits because its condition is false [-Wsometimes-uninitialized]
        SOC15_WAIT_ON_RREG(VCN, 0, mmUVD_STATUS, UVD_STATUS__IDLE, 0x7, r);
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/amd/amdgpu/../amdgpu/soc15_common.h:55:10: note: expanded from macro 'SOC15_WAIT_ON_RREG'
                while ((tmp_ & (mask)) != (expected_value)) {   \
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1083:6: note: uninitialized use occurs here
        if (r)
            ^
../drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1082:2: note: remove the condition if it is always true
        SOC15_WAIT_ON_RREG(VCN, 0, mmUVD_STATUS, UVD_STATUS__IDLE, 0x7, r);
        ^
../drivers/gpu/drm/amd/amdgpu/../amdgpu/soc15_common.h:55:10: note: expanded from macro 'SOC15_WAIT_ON_RREG'
                while ((tmp_ & (mask)) != (expected_value)) {   \
                       ^
../drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c:1072:7: note: initialize the variable 'r' to silence this warning
        int r;
             ^
              = 0
1 warning generated.