bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-22 08:44:02 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/pm: avoid duplicate powergate/ungate setting

Browse Source 
Just bail out if the target IP block is already in the desired
powergate/ungate state. This can avoid some duplicate settings
which sometimes may cause unexpected issues.

Link: https://lore.kernel.org/all/YV81vidWQLWvATMM@zn.tnic/
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=214921
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=215025
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1789
Fixes: bf756fb833 ("drm/amdgpu: add missing cleanups for Polaris12 UVD/VCE on suspend")
Signed-off-by: Evan Quan <evan.quan@amd.com>
Tested-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Evan Quan
2021-11-05 15:25:30 +08:00
committed by Alex Deucher
parent 69650a879b
commit 6ee27ee27b
4 changed files with 23 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/amd/pm/amdgpu_dpm.c
View File

@@ -927,6 +927,13 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
{
int ret = 0;
const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
enum ip_power_state pwr_state = gate ? POWER_STATE_OFF : POWER_STATE_ON;
if (atomic_read(&adev->pm.pwr_state[block_type]) == pwr_state) {
dev_dbg(adev->dev, "IP block%d already in the target %s state!",
block_type, gate ? "gate" : "ungate");
return 0;
}
switch (block_type) {
case AMD_IP_BLOCK_TYPE_UVD:
@@ -979,6 +986,9 @@ int amdgpu_dpm_set_powergating_by_smu(struct amdgpu_device *adev, uint32_t block
break;
}
if (!ret)
atomic_set(&adev->pm.pwr_state[block_type], pwr_state);
return ret;
}