Re: [PATCH] drm/amdgpu: fix autosuspend cleanup during removal

[Mario Limonciello <superm1@kernel.org>]

On 8/12/26 14:41, Alex Deucher wrote:
> Did this ever land?  I don't see it in ASDN.
> 

It's on gerrit, but it seems stuck.  I'll ping you the link offline.

> Alex
> 
> On Mon, Aug 10, 2026 at 10:35 AM Mario Limonciello <superm1@kernel.org> wrote:
>>
>> On 8/8/26 07:09, Guangshuo Li wrote:
>>> amdgpu_pci_probe() calls pm_runtime_use_autosuspend(), but
>>> amdgpu_pci_remove() does not call the matching
>>> pm_runtime_dont_use_autosuspend().
>>>
>>> If the autosuspend delay is set to a negative value while autosuspend
>>> is enabled, the runtime PM core increments usage_count to prevent
>>> runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
>>> during teardown, this reference is not dropped and usage_count remains
>>> unbalanced.
>>>
>>> The documentation for pm_runtime_use_autosuspend() also notes that it
>>> is important to undo it with pm_runtime_dont_use_autosuspend() at
>>> driver exit time, unless runtime PM was initially enabled with
>>> devm_pm_runtime_enable().
>>>
>>> Add the missing pm_runtime_dont_use_autosuspend() call to the remove
>>> path.
>>>
>>> This issue was found by manual code inspection.
>>>
>>> Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
>>> Cc: stable@vger.kernel.org
>>> Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
>>
>> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
>>
>> Also applied to amd-staging-drm-next.
>>
>>> ---
>>>    drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 +
>>>    1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>>> index 1aed121f4ddb..e814701bc8fd 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>>> @@ -2548,6 +2548,7 @@ amdgpu_pci_remove(struct pci_dev *pdev)
>>>        if (adev->pm.rpm_mode != AMDGPU_RUNPM_NONE) {
>>>                pm_runtime_get_sync(dev->dev);
>>>                pm_runtime_forbid(dev->dev);
>>> +             pm_runtime_dont_use_autosuspend(dev->dev);
>>>        }
>>>
>>>        amdgpu_driver_unload_kms(dev);
>>