[PATCH 2/7] drm/msm/dpu: drop dpu_encoder_early_unregister

[Dmitry Baryshkov]

On Tue, 2 May 2023 at 23:45, Abhinav Kumar <quic_abhinavk at quicinc.com> wrote:
>
>
>
> On 4/30/2023 4:57 PM, Dmitry Baryshkov wrote:
> > There is no need to clean up debugfs manually, it will be done by the
> > DRM core on device deregistration.
> >
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> > ---
>
> There are two reasons to have the debugfs removed in the early_unregister:
>
> 1) Today, registration happens in late_register(), hence to balance the
> the call in _dpu_encoder_init_debugfs(), this one is present.
>
> 2) In drm_modeset_register_all(), if drm_connector_register_all() fails,
> it calls drm_encoder_unregister_all() first which calls early_unregister().
>
> So to balance these out, dont we need to keep it?

Please correct me if I'm wrong, drm_debugfs_cleanup() should take care of that.

> >   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 8 --------
> >   1 file changed, 8 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > index 32785cb1b079..8c45c949ec39 100644
> > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> > @@ -2154,13 +2154,6 @@ static int dpu_encoder_late_register(struct drm_encoder *encoder)
> >       return _dpu_encoder_init_debugfs(encoder);
> >   }
> >
> > -static void dpu_encoder_early_unregister(struct drm_encoder *encoder)
> > -{
> > -     struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(encoder);
> > -
> > -     debugfs_remove_recursive(dpu_enc->debugfs_root);
> > -}
> > -
> >   static int dpu_encoder_virt_add_phys_encs(
> >               struct msm_display_info *disp_info,
> >               struct dpu_encoder_virt *dpu_enc,
> > @@ -2374,7 +2367,6 @@ static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = {
> >   static const struct drm_encoder_funcs dpu_encoder_funcs = {
> >               .destroy = dpu_encoder_destroy,
> >               .late_register = dpu_encoder_late_register,
> > -             .early_unregister = dpu_encoder_early_unregister,
> >   };
> >
> >   struct drm_encoder *dpu_encoder_init(struct drm_device *dev,

-- 
With best wishes
Dmitry