[PATCH v1] drm/mipi-dsi: Set the fwnode for mipi_dsi_device

[Saravana Kannan]

On Fri, Mar 17, 2023 at 3:36 PM Saravana Kannan <saravanak at google.com> wrote:
>
> On Sun, Mar 12, 2023 at 7:45 AM Martin Kepplinger
> <martin.kepplinger at puri.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 at puri.sm>
> >
> > Reported-and-tested-by: Martin Kepplinger <martin.kepplinger at puri.sm>
>
> Maintainers,
>
> Nudge nudge. Will this be picked up for 6.3-rcX?

Greg,

Can you pick this up please? It's a fix that hasn't been picked up for
a few months.

Here's the link to the actual patch for your convenience:
https://lore.kernel.org/lkml/20230310063910.2474472-1-saravanak@google.com/#t

-Saravana

>
> -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 at google.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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> >