[PATCH] drm/tilcdc: Defer probe if no encoders/connectors found

[Rob Clark]

On Wed, Dec 18, 2013 at 8:56 AM, Markus Pargmann <mpa at pengutronix.de> wrote:
> At the moment this driver fails to load if no encoders/connectors were
> found. In case other drivers that register encoders/connectors
> (tilcdc_panel) are defered it would be better to check for
> encoders/connectors later again. This patch replaces the returncode
> -ENXIO with -EPROBE_DEFER to get a working setup even if tilcdc_panel
> probes after tilcdc.

yeah, that is probably better than relying on late_initcall() hacks..

Signed-off-by: Rob Clark <robdclark at gmail.com>

> Signed-off-by: Markus Pargmann <mpa at pengutronix.de>
> ---
>  drivers/gpu/drm/tilcdc/tilcdc_drv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> index 116da19..217303c 100644
> --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> @@ -84,7 +84,7 @@ static int modeset_init(struct drm_device *dev)
>         if ((priv->num_encoders == 0) || (priv->num_connectors == 0)) {
>                 /* oh nos! */
>                 dev_err(dev->dev, "no encoders/connectors found\n");
> -               return -ENXIO;
> +               return -EPROBE_DEFER;
>         }
>
>         dev->mode_config.min_width = 0;
> --
> 1.8.5.1
>
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