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Ungate GPU CG/PG in device_fini_hw and device_halt to protect GPU register accesses, e.g. GC registers are accessed in amdgpu_irq_disable_all() and amdgpu_fence_driver_hw_fini(). Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org