[PATCH] drm/msm/a6xx: fix uninitialised lock in init error path

[Doug Anderson]

Hi,

On Wed, May 31, 2023 at 1:00 AM Johan Hovold <johan+linaro at kernel.org> wrote:
>
> A recent commit started taking the GMU lock in the GPU destroy path,
> which on GPU initialisation failure is called before the GMU and its
> lock have been initialised.
>
> Make sure that the GMU has been initialised before taking the lock in
> a6xx_destroy() and drop the now redundant check from a6xx_gmu_remove().
>
> Fixes: 4cd15a3e8b36 ("drm/msm/a6xx: Make GPU destroy a bit safer")
> Cc: stable at vger.kernel.org      # 6.3
> Cc: Douglas Anderson <dianders at chromium.org>
> Signed-off-by: Johan Hovold <johan+linaro at kernel.org>
> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 3 ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 9 ++++++---
>  2 files changed, 6 insertions(+), 6 deletions(-)

I think Dmitry already posted a patch 1.5 months ago to fix this.

https://lore.kernel.org/r/20230410165908.3094626-1-dmitry.baryshkov@linaro.org

Can you confirm that works for you?

-Doug