AMDGPU_FLIP_NONE
if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_NONE) {
amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
WARN_ON(acrtc_attach->pflip_status != AMDGPU_FLIP_NONE);
amdgpu_crtc->pflip_status = AMDGPU_FLIP_NONE;
acrtc->pflip_status = AMDGPU_FLIP_NONE;