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drm/amd: Forbid suspending into non-default suspend states

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On systems that default to 'deep' some userspace software likes
to try to suspend in 'deep' first.  If there is a failure for any
reason (such as -ENOMEM) the failure is ignored and then it will
try to use 's2idle' as a fallback. This fails, but more importantly
it leads to graphical problems.

Forbid this behavior and only allow suspending in the last state
supported by the system.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4093
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250408180957.4027643-1-superm1@kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello
2025-04-08 13:09:57 -05:00
committed by Alex Deucher
parent 8b2ae7d492
commit 2aabd44aa8
2 changed files with 14 additions and 1 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -1150,6 +1150,7 @@ struct amdgpu_device {
bool in_s3;
bool in_s4;
bool in_s0ix;
suspend_state_t last_suspend_state;
enum pp_mp1_state mp1_state;
struct amdgpu_doorbell_index doorbell_index;