linux-kernel - Re: [PATCH] drm: rcar-du: switch to devm_drm_of_get

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Date:   Mon, 21 Feb 2022 14:15:01 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     José Expósito <jose.exposito89@...il.com>,
        kieran.bingham+renesas@...asonboard.com, airlied@...ux.ie,
        daniel@...ll.ch, dri-devel@...ts.freedesktop.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: rcar-du: switch to devm_drm_of_get_bridge

On Mon, Feb 21, 2022 at 09:56:19AM +0100, Maxime Ripard wrote:
> On Mon, Feb 21, 2022 at 08:37:57AM +0100, José Expósito wrote:
> > The function "drm_of_find_panel_or_bridge" has been deprecated in
> > favor of "devm_drm_of_get_bridge".
> > 
> > Switch to the new function and reduce boilerplate.
> > 
> > Signed-off-by: José Expósito <jose.exposito89@...il.com>
> > ---
> >  drivers/gpu/drm/rcar-du/rcar_lvds.c | 16 +++++-----------
> >  1 file changed, 5 insertions(+), 11 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
> > index 72a272cfc11e..99b0febc56d1 100644
> > --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
> > +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
> > @@ -712,18 +712,12 @@ static int rcar_lvds_parse_dt(struct rcar_lvds *lvds)
> >  {
> >  	int ret;
> >  
> > -	ret = drm_of_find_panel_or_bridge(lvds->dev->of_node, 1, 0,
> > -					  &lvds->panel, &lvds->next_bridge);
> 
> I guess lvds->panel can be removed from the rcar_lvds struct as well?

It's used in rcar_lvds_get_lvds_mode() though, so this patch introduces
a regression.

-- 
Regards,

Laurent Pinchart