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drm/of: Make drm_of_find_panel_or_bridge() fail when the device is disabled 

There's no point searching for a drm_bridge or drm_panel if the OF node
we're pointing has a status property that is not "okay" or "ok". Just
return -ENODEV in this case.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509130042.9435-4-boris.brezillon@bootlin.com
This commit is contained in:
Boris Brezillon 2018-05-09 15:00:41 +02:00 committed by Thierry Reding
parent c59eb3cfde
commit 2e64a17417
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/drm_of.c
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@ -239,6 +239,11 @@ int drm_of_find_panel_or_bridge(const struct device_node *np,
if (!remote)
return -ENODEV;
if (!of_device_is_available(remote)) {
of_node_put(remote);
return -ENODEV;
}
if (panel) {
*panel = of_drm_find_panel(remote);
if (!IS_ERR(*panel))