linux-kernel - Re: [PATCH v1] drm/mipi-dsi: Set the fwnode for mipi_dsi

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Message-ID: <CAGETcx_0NaSTFFn34nvax2_pG+_5BJtOD0j0wrqU0NSCqwfKWA@mail.gmail.com>
Date:   Fri, 17 Mar 2023 15:36:32 -0700
From:   Saravana Kannan <saravanak@...gle.com>
To:     Martin Kepplinger <martin.kepplinger@...i.sm>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thierry Reding <treding@...dia.com>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        kernel-team@...roid.com, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] drm/mipi-dsi: Set the fwnode for mipi_dsi_device

On Sun, Mar 12, 2023 at 7:45 AM Martin Kepplinger
<martin.kepplinger@...i.sm> wrote:
>
> Am Donnerstag, dem 09.03.2023 um 22:39 -0800 schrieb Saravana Kannan:
> > After commit 3fb16866b51d ("driver core: fw_devlink: Make cycle
> > detection more robust"), fw_devlink prints an error when consumer
> > devices don't have their fwnode set. This used to be ignored
> > silently.
> >
> > Set the fwnode mipi_dsi_device so fw_devlink can find them and
> > properly
> > track their dependencies.
> >
> > This fixes errors like this:
> > [    0.334054] nwl-dsi 30a00000.mipi-dsi: Failed to create device
> > link with regulator-lcd-1v8
> > [    0.346964] nwl-dsi 30a00000.mipi-dsi: Failed to create device
> > link with backlight-dsi
> >
> > Reported-by: Martin Kepplinger <martin.kepplinger@...i.sm>
>
> Reported-and-tested-by: Martin Kepplinger <martin.kepplinger@...i.sm>

Maintainers,

Nudge nudge. Will this be picked up for 6.3-rcX?

-Saravana

>
> thanks,
>                          martin
>
> > Link:
> > https://lore.kernel.org/lkml/2a8e407f4f18c9350f8629a2b5fa18673355b2ae.camel@puri.sm/
> > Fixes: 068a00233969 ("drm: Add MIPI DSI bus support")
> > Signed-off-by: Saravana Kannan <saravanak@...gle.com>
> > ---
> >  drivers/gpu/drm/drm_mipi_dsi.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/drm_mipi_dsi.c
> > b/drivers/gpu/drm/drm_mipi_dsi.c
> > index b41aaf2bb9f1..7923cc21b78e 100644
> > --- a/drivers/gpu/drm/drm_mipi_dsi.c
> > +++ b/drivers/gpu/drm/drm_mipi_dsi.c
> > @@ -221,7 +221,7 @@ mipi_dsi_device_register_full(struct
> > mipi_dsi_host *host,
> >                 return dsi;
> >         }
> >
> > -       dsi->dev.of_node = info->node;
> > +       device_set_node(&dsi->dev, of_fwnode_handle(info->node));
> >         dsi->channel = info->channel;
> >         strlcpy(dsi->name, info->type, sizeof(dsi->name));
> >
>
>
> --
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