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Hi Greg, Sasha,
The original patch 73dae652dcac (drm/amdgpu: rework resume handling for display (v2)), was only targeted at kernels 6.11 and newer. It did not apply cleanly to 6.12 so I backported it and it backport landed as 99a02eab8251 ("drm/amdgpu: rework resume handling for display (v2)"), however there was a bug in the backport that was subsequently fixed in 063d380ca28e ("drm/amdgpu: fix backport of commit 73dae652dcac"). None of this was intended for kernels older than 6.11, however the original backport eventually landed in 6.6, 6.1, and 5.15. Please revert the change from kernels 6.6, 6.1, and 5.15.
6.6.y: Please revert 2daba7d857e4 ("drm/amdgpu: rework resume handling for display (v2)").
6.1.y: Please revert c807ab3a861f ("drm/amdgpu: rework resume handling for display (v2)").
5.15.y: Please revert d897650c5897 ("drm/amdgpu: rework resume handling for display (v2)").
Thanks,
Alex