diff mbox

[v3,3/4] drm/of: Make drm_of_find_panel_or_bridge() fail when the device is disabled

Message ID 20180509130042.9435-4-boris.brezillon@bootlin.com (mailing list archive)
State New, archived
Headers show

Commit Message

Boris Brezillon May 9, 2018, 1 p.m. UTC 
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>
---
Changes in v3:
- Add Thierry's A-b/R-b

Changes in v2:
- New commit
---
 drivers/gpu/drm/drm_of.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index 81d3f76c43f3..7678100fd772 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -238,6 +238,11 @@  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))