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drm/amdgpu: don't use BACO for reset in S3

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commit ebc002e3ee78409c42156e62e4e27ad1d09c5a75 upstream.

Seems to cause a reboots or hangs on some systems.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1924
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1953
Fixes: daf8de0874ab5b ("drm/amdgpu: always reset the asic in suspend (v2)")
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alex Deucher 2022-03-25 11:53:39 -04:00 committed by Greg Kroah-Hartman
parent 3c8902bbf2
commit b536cf3eb6
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/amd/pm/amdgpu_dpm.c
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@ -1045,6 +1045,17 @@ bool amdgpu_dpm_is_baco_supported(struct amdgpu_device *adev)
if (!pp_funcs || !pp_funcs->get_asic_baco_capability)
return false;
/* Don't use baco for reset in S3.
* This is a workaround for some platforms
* where entering BACO during suspend
* seems to cause reboots or hangs.
* This might be related to the fact that BACO controls
* power to the whole GPU including devices like audio and USB.
* Powering down/up everything may adversely affect these other
* devices. Needs more investigation.
*/
if (adev->in_s3)
return false;
if (pp_funcs->get_asic_baco_capability(pp_handle, &baco_cap))
return false;