linux-kernel - Re: [PATCH v3 01/10] drm/bridge: cdns-dsi: Fix OF node pointer

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Date: Mon, 17 Jun 2024 14:57:59 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Aradhya Bhatia <a-bhatia1@...com>
Cc: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>, 
	Andrzej Hajda <andrzej.hajda@...el.com>, Neil Armstrong <neil.armstrong@...aro.org>, 
	Robert Foss <rfoss@...nel.org>, Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
	Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, 
	Jyri Sarha <jyri.sarha@....fi>, Thomas Zimmermann <tzimmermann@...e.de>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, 
	DRI Development List <dri-devel@...ts.freedesktop.org>, Linux Kernel List <linux-kernel@...r.kernel.org>, 
	Dominik Haller <d.haller@...tec.de>, Sam Ravnborg <sam@...nborg.org>, 
	Thierry Reding <treding@...dia.com>, Kieran Bingham <kieran.bingham+renesas@...asonboard.com>, 
	Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>, 
	Praneeth Bajjuri <praneeth@...com>, Udit Kumar <u-kumar1@...com>, Devarsh Thakkar <devarsht@...com>, 
	Jayesh Choudhary <j-choudhary@...com>, Jai Luthra <j-luthra@...com>
Subject: Re: [PATCH v3 01/10] drm/bridge: cdns-dsi: Fix OF node pointer

On Mon, Jun 17, 2024 at 04:23:02PM GMT, Aradhya Bhatia wrote:
> Fix the OF node pointer passed to the of_drm_find_bridge() call to find
> the next bridge in the display chain.
> 
> To find the next bridge in the pipeline, we need to pass "np" - the OF
> node pointer of the next entity in the devicetree chain. Passing
> "of_node" to of_drm_find_bridge will make the function try to fetch the
> bridge for the cdns-dsi which is not what's required.
> 
> Fix that.
> 
> Fixes: e19233955d9e ("drm/bridge: Add Cadence DSI driver")
> Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
> ---
>  drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Nit: consider switching to devm_drm_of_get_bridge(), which does the
same.

-- 
With best wishes
Dmitry