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drm/amd/pm: fix the crash after runtime pm resume

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Some features are still disabled after runtime pm resume. This can take
the hardware back.
Unlike other projects, this doesn't need pptable retransfer.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Likun Gao 2020-11-20 15:44:36 +08:00 committed by Alex Deucher
parent 7203a2fd98
commit ddc3344f16
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
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@ -918,11 +918,15 @@ static int smu_smc_hw_setup(struct smu_context *smu)
{
struct amdgpu_device *adev = smu->adev;
uint32_t pcie_gen = 0, pcie_width = 0;
int ret;
int ret = 0;
if (adev->in_suspend && smu_is_dpm_running(smu)) {
dev_info(adev->dev, "dpm has been enabled\n");
return 0;
/* this is needed specifically */
if ((adev->asic_type >= CHIP_SIENNA_CICHLID) &&
(adev->asic_type <= CHIP_DIMGREY_CAVEFISH))
ret = smu_system_features_control(smu, true);
return ret;
}
ret = smu_init_display_count(smu, 0);