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drm/imx: parallel-display: Accept drm_of_find_panel_or_bridge failure

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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: ebc9446135 ("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>
This commit is contained in:
Philipp Zabel 2017-06-12 17:54:29 +02:00
parent f2ad99fc46
commit 799ee29704
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/imx/parallel-display.c
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@ -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;