Re: [PATCH v2 08/21] drm/msm: Use drm_attach_bridge() to attach a bridge to an encoder

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On Wed, 28 Aug 2019 11:22:57 -0400
Sean Paul <sean@xxxxxxxxxx> wrote:

> On Mon, Aug 26, 2019 at 05:26:36PM +0200, Boris Brezillon wrote:
> > This is part of our attempt to make the bridge chain a double-linked
> > list based on the generic list helpers. In order to do that, we must
> > patch all drivers manipulating the encoder->bridge field directly.
> > 
> > Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
> > Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>  
> 
> Do you want to take this through -misc?
> 
> Reviewed-by: Sean Paul <sean@xxxxxxxxxx>

Yes, that was the plan, unless you want to apply it to the msm tree
(not sure if there's such a tree).

> 
> 
> > ---
> > Changes in v2:
> > * Add Laurent and Sam R-b (waiting for a R-b from a drm/msm maintainer
> >   now)
> > ---
> >  drivers/gpu/drm/msm/edp/edp.c   | 4 +++-
> >  drivers/gpu/drm/msm/hdmi/hdmi.c | 4 +++-
> >  2 files changed, 6 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/msm/edp/edp.c b/drivers/gpu/drm/msm/edp/edp.c
> > index b54559a79d36..ad4e963ccd9b 100644
> > --- a/drivers/gpu/drm/msm/edp/edp.c
> > +++ b/drivers/gpu/drm/msm/edp/edp.c
> > @@ -178,7 +178,9 @@ int msm_edp_modeset_init(struct msm_edp *edp, struct drm_device *dev,
> >  		goto fail;
> >  	}
> >  
> > -	encoder->bridge.next = edp->bridge;
> > +	ret = drm_bridge_attach(encoder, edp->bridge, NULL);
> > +	if (ret)
> > +		goto fail;
> >  
> >  	priv->bridges[priv->num_bridges++]       = edp->bridge;
> >  	priv->connectors[priv->num_connectors++] = edp->connector;
> > diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c
> > index 9d94a88dd8d6..55b9a8c8312b 100644
> > --- a/drivers/gpu/drm/msm/hdmi/hdmi.c
> > +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c
> > @@ -327,7 +327,9 @@ int msm_hdmi_modeset_init(struct hdmi *hdmi,
> >  		goto fail;
> >  	}
> >  
> > -	encoder->bridge.next = hdmi->bridge;
> > +	ret = drm_bridge_attach(encoder, hdmi->bridge, NULL);
> > +	if (ret)
> > +		goto fail;
> >  
> >  	priv->bridges[priv->num_bridges++]       = hdmi->bridge;
> >  	priv->connectors[priv->num_connectors++] = hdmi->connector;
> > -- 
> > 2.21.0
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel  
> 

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