On Thu, Nov 03, 2016 at 05:32:42PM +0200, Ville Syrjälä wrote:
> On Mon, Oct 17, 2016 at 02:37:04PM +0200, Maarten Lankhorst wrote:
> > This kills another dereference of connector->state. connector_mask
> > holds all unchanged connectors at least and any changed connectors
> > are already in state anyway.
> >
> > Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/drm_atomic.c | 11 ++++++++---
> > 1 file changed, 8 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> > index 120775fcfb70..1915ec44f7eb 100644
> > --- a/drivers/gpu/drm/drm_atomic.c
> > +++ b/drivers/gpu/drm/drm_atomic.c
> > @@ -1230,8 +1230,13 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
> > struct drm_mode_config *config = &state->dev->mode_config;
> > struct drm_connector *connector;
> > struct drm_connector_state *conn_state;
> > + struct drm_crtc_state *crtc_state;
> > int ret;
> >
> > + crtc_state = drm_atomic_get_crtc_state(state, crtc);
> > + if (IS_ERR(crtc_state))
> > + return PTR_ERR(crtc_state);
> > +
> > ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
> > if (ret)
> > return ret;
> > @@ -1240,11 +1245,11 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
> > crtc->base.id, crtc->name, state);
> >
> > /*
> > - * Changed connectors are already in @state, so only need to look at the
> > - * current configuration.
> > + * Changed connectors are already in @state, so only need to look
> > + * at the connector_mask in crtc_state.
> > */
> > drm_for_each_connector(connector, state->dev) {
> > - if (connector->state->crtc != crtc)
> > + if (!(crtc_state->connector_mask & (1 << drm_connector_index(connector))))
> > continue;
>
> So this being the new crtc state, connector_mask will include all newly enabled
> connectors (these will have been already added to the top level state), and
> also any connector that was already enabled and isn't getting disabled (these
> are the ones we need to explicitly add to the top level state here).
>
> /me wishes the top level state would be renamed to drm_atomic_transaction or something...
+1 on drm_atomic_transaction, that's an awesome name. Not sure how bad it
would be to roll this out though ...
-Daniel
>
> Any connector that is getting disabled will already have been added to
> the top level state as well, so them not being included in the new crtc
> state's connectors_mask is fine.
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> >
> > conn_state = drm_atomic_get_connector_state(state, connector);
> > --
> > 2.7.4
> >
> > _______________________________________________
> > Intel-gfx mailing list
> > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Ville Syrjälä
> Intel OTC
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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