Re: [PATCH v2 2/2] drm/msm/a6xx: check pm_runtime_resume_and_get during resume

[Konrad Dybcio]

On 9/29/26 4:20 PM, Roman Demidov wrote:
> The return values of pm_runtime_resume_and_get() calls in a6xx_pm_resume()
> are not checked, which can lead to hardware access on suspended devices
> and PM reference underflows.
> 
> Fix this by checking the return value of each pm_runtime_resume_and_get()
> call and properly unwinding the previously acquired resources on failure.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support")
> Signed-off-by: Roman Demidov <roman.demidov.nn@xxxxxxxxx>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

Konrad