[PATCH] drm/bridge: tc358767: fix probe without attached output node

[Andrey Gusakov]

Hi,

On Mon, Jul 10, 2017 at 3:41 PM, Lucas Stach <l.stach at pengutronix.de> wrote:

> The output node of the TC358767 is only used if another bridge is chained
> behind it. Panels attached to the TC358767 can be detected using the usual
> DP AUX probing. This restores the old behavior of ignoring the output if
> no endpoint is found.
>
> Fixes: ebc944613567 (drm: convert drivers to use
> drm_of_find_panel_or_bridge)
> CC: stable at vger.kernel.org
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
>

Acked-by: Andrey Gusakov <andrey.gusakov at cogentembedded.com>

---
>  drivers/gpu/drm/bridge/tc358767.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/tc358767.c
> b/drivers/gpu/drm/bridge/tc358767.c
> index 5c26488e7a2d..0529e500c534 100644
> --- a/drivers/gpu/drm/bridge/tc358767.c
> +++ b/drivers/gpu/drm/bridge/tc358767.c
> @@ -1255,7 +1255,7 @@ static int tc_probe(struct i2c_client *client, const
> struct i2c_device_id *id)
>
>         /* port at 2 is the output port */
>         ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &tc->panel,
> NULL);
> -       if (ret)
> +       if (ret && ret != -ENODEV)
>                 return ret;
>
>         /* Shut down GPIO is optional */
> --
> 2.11.0
>
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