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drm/amd/pm/smu11: BACO is supported when it's in BACO state

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Return true early if ASIC is in BACO state already, no need
to talk to SMU. It can fix the issue that driver was not
calling BACO exit at all in runtime pm resume, and a timing
issue leading to a PCI AER error happened eventually.

Fixes: 8795e182b0 ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()")
Suggested-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Guchun Chen 2022-11-22 17:33:24 +08:00 committed by Alex Deucher
parent 6d96ced760
commit 6dca7efe6e
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
View file

@ -1588,6 +1588,10 @@ bool smu_v11_0_baco_is_support(struct smu_context *smu)
if (amdgpu_sriov_vf(smu->adev) || !smu_baco->platform_support)
return false;
/* return true if ASIC is in BACO state already */
if (smu_v11_0_baco_get_state(smu) == SMU_BACO_STATE_ENTER)
return true;
/* Arcturus does not support this bit mask */
if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_BACO_BIT) &&
!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT))