From: Mark Yao <mark.yao@rock-chips.com>
Date: Sun, 22 Jan 2017 03:56:06 +0000 (+0800)
Subject: drm: of: don't mask possible_crtcs if remote-point is disabled
X-Git-Tag: firefly_0821_release~692
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=33f23515741d73a2e8e2b43823815dfbf505dae8;p=firefly-linux-kernel-4.4.55.git

drm: of: don't mask possible_crtcs if remote-point is disabled

Change-Id: I98d42ce5c9a5ed832e455a3d1fc88cf3ec717d69
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
---

diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index bc98bb94264d..fb758f26cf5c 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -48,6 +48,11 @@ uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
 	uint32_t possible_crtcs = 0;
 
 	for_each_endpoint_of_node(port, ep) {
+		if (!of_device_is_available(ep)) {
+			of_node_put(ep);
+			continue;
+		}
+
 		remote_port = of_graph_get_remote_port(ep);
 		if (!remote_port) {
 			of_node_put(ep);