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authorPhilipp Zabel <p.zabel@pengutronix.de>2017-06-12 17:54:29 +0200
committerPhilipp Zabel <p.zabel@pengutronix.de>2017-07-17 15:57:52 +0200
commit799ee2970485dc206c3bf347d6e6827c04d5e4f9 (patch)
parentf2ad99fc46d5454e097692c8c8202fd5bc46c809 (diff)
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: ebc944613567 ("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>
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 636031a30e17..8aca20209cb8 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;