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Revert "drm/amd: Keep display off while going into S4"

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commit 68bfdc8dc0 ("drm/amd: Keep display off while going into S4")
attempted to keep displays off during the S4 sequence by not resuming
display IP.  This however leads to hangs because DRM clients such as the
console can try to access registers and cause a hang.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4155
Fixes: 68bfdc8dc0 ("drm/amd: Keep display off while going into S4")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250522141328.115095-1-mario.limonciello@amd.com
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
2025-05-22 09:13:28 -05:00
committed by Alex Deucher
parent 42f520f70d
commit e485502c37
1 changed files with 0 additions and 5 deletions
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5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -3383,11 +3383,6 @@ static int dm_resume(struct amdgpu_ip_block *ip_block)
return 0;
}
/* leave display off for S4 sequence */
if (adev->in_s4)
return 0;
/* Recreate dc_state - DC invalidates it when setting power state to S3. */
dc_state_release(dm_state->context);
dm_state->context = dc_state_create(dm->dc, NULL);