On Tue, Sep 29, 2026 at 05:20:59PM +0300, 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 <[email protected]>
> ---
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 38 +++++++++++++++------------
> 1 file changed, 21 insertions(+), 17 deletions(-)
>
Reviewed-by: Dmitry Baryshkov <[email protected]>
--
With best wishes
Dmitry
