The parallel panel driver should continue to work without having an endpoint linking to an panel in DT for backwards compatibility. With the recent switch to drm_of_find_panel_or_bridge, an absent panel results in a failure with -ENODEV error return code. To restore the old behaviour, ignore the -ENODEV return code.
Reported-by: Nikita Yushchenko nikita.yoush@cogentembedded.com Fixes: ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge") Signed-off-by: Philipp Zabel p.zabel@pengutronix.de --- drivers/gpu/drm/imx/parallel-display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 636031a30e17d..8aca20209cb80 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -237,7 +237,7 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
/* port@1 is the output port */ ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge); - if (ret) + if (ret && ret != -ENODEV) return ret;
imxpd->dev = dev;