Re: [PATCH] drm/msm/adreno: fix autosuspend cleanup during teardown

[Krzysztof Kozlowski <krzk@kernel.org>]

On 18/08/2026 12:40, Konrad Dybcio wrote:
> On 8/8/26 3:16 PM, Guangshuo Li wrote:
>> adreno_gpu_init() calls pm_runtime_use_autosuspend(), but
>> adreno_gpu_cleanup() does not call the matching
>> pm_runtime_dont_use_autosuspend() during teardown.
>>
>> 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
>> adreno_gpu_cleanup().
>>
>> This issue was found by manual code inspection.
>>
>> Fixes: eeb754746b14 ("drm/msm/gpu: use pm-runtime")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
>> ---
> 
> I think we can use devm_pm_runtime_enable() instead, which will take
> care of cleaning up both the autosuspend and runpm halves
> 

Author here is unresponsive, he was told a few times to send corrections
for his vast amount of unthreaded patches and there is zero reaction.

Best regards,
Krzysztof