[PATCH] drm/exynos: dp: Fix panel and bridge lookup logic

Hello Inki,

On 01/29/2016 12:09 PM, Javier Martinez Canillas wrote:

Commit a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support
for panel") made the Exynos DP DT binding more consistent since the OF
graph could be used to lookup either a panel or a bridge device node.

Before that commit, a panel would be looked up using a phandle and a
bridge using the OF graph which made the DT binding not consistent.

But the patch broke the later case since not finding a panel dev node
would cause the driver's to do a probe deferral instead of attempting
to lookup a bridge device node associated with the remote endpoint.

So instead of returning a -EPROBE_DEFER if a panel is not found, check
if there's a bridge and only do a probe deferral if both aren't found.

Fixes: a9fa852886fd ("drm/exynos: dp: add of_graph dt binding support for panel")
Signed-off-by: Javier Martinez Canillas <redacted>

Any comments about this patch? It is needed to have display working on
machines with a bridge chip again so it should be pushed to -rc ASAP.

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America