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drm/amd/powerplay: correct the way for checking SMU_FEATURE_BACO_BIT support

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Since 'smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT)' will always return
false considering the 'smu_system_features_control(smu, false)' disabled
all SMU features.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2020-02-12 11:52:20 +08:00 committed by Alex Deucher
parent 434cbcb1bd
commit c16904b0f3
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
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@ -1488,7 +1488,18 @@ static int smu_disable_dpm(struct smu_context *smu)
/* For baco, need to leave BACO feature enabled */
if (use_baco) {
if (smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT)) {
/*
* Correct the way for checking whether SMU_FEATURE_BACO_BIT
* is supported.
*
* Since 'smu_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT)' will
* always return false as the 'smu_system_features_control(smu, false)'
* was just issued above which disabled all SMU features.
*
* Thus 'smu_feature_get_index(smu, SMU_FEATURE_BACO_BIT)' is used
* now for the checking.
*/
if (smu_feature_get_index(smu, SMU_FEATURE_BACO_BIT) >= 0) {
ret = smu_feature_set_enabled(smu, SMU_FEATURE_BACO_BIT, true);
if (ret) {
pr_warn("set BACO feature enabled failed, return %d\n", ret);