Commit 799ee297 authored Jun 12, 2017 by Philipp Zabel

drm/imx: parallel-display: Accept drm_of_find_panel_or_bridge failure



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: ebc94461 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Tested-by: Chris Healy <cphealy@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

parent f2ad99fc

drivers/gpu/drm/imx/parallel-display.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;