On Tue, 7 Sept 2021 at 07:11, Rob Clark <robdclark@xxxxxxxxx> wrote: > > One thing I thought of, which would be worth ruling out, is whether > this issue only occurs with freq changes immediately after resuming > the GPU, vs freq changes in general. Could you try the below patch. > And if it "fixes" the issue, then try reducing the delay until you > start seeing GPU hangs again. It doesn't fix the crash and I can still reproduce it https://pastebin.com/raw/bxK4mAhB > > ---------- > diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c > b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c > index 40c9fef457a4..278b85207ea3 100644 > --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c > +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c > @@ -1513,6 +1513,8 @@ static int a6xx_pm_resume(struct msm_gpu *gpu) > if (ret) > return ret; > > + msleep(5); > + > msm_devfreq_resume(gpu); > > a6xx_llc_activate(a6xx_gpu); > ---------- > > BR, > -R
