1 files changed, 40 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.19.8/1218-drm-amd-display-Clear-dc_sink-after-it-gets-released.patch b/common/recipes-kernel/linux/linux-yocto-4.19.8/1218-drm-amd-display-Clear-dc_sink-after-it-gets-released.patch
new file mode 100644
index 00000000..fb2641b8
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.19.8/1218-drm-amd-display-Clear-dc_sink-after-it-gets-released.patch
@@ -0,0 +1,40 @@
+From 612320f7a3a766263b6bc727c0d5fd1be1a178b3 Mon Sep 17 00:00:00 2001
+From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com>
+Date: Thu, 24 Jan 2019 11:46:49 -0500
+Subject: [PATCH 1218/2940] drm/amd/display: Clear dc_sink after it gets
+ released
+
+[Why]
+The dc_sink was released but the pointer on the aconnector was
+not cleared.
+
+[How]
+Clear it.
+
+Change-Id: Ifc8d72f51b5c6600d63b88f3011aef8ffc957e66
+Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
+Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
+Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
+---
+ drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+index 73f8e8fa6edb..44c1a02e6452 100644
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+@@ -173,8 +173,10 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector)
+ 		aconnector->edid = edid;
+ 	}
+ 
+-	if (aconnector->dc_sink && aconnector->dc_sink->sink_signal == SIGNAL_TYPE_VIRTUAL)
++	if (aconnector->dc_sink && aconnector->dc_sink->sink_signal == SIGNAL_TYPE_VIRTUAL) {
+ 		dc_sink_release(aconnector->dc_sink);
++		aconnector->dc_sink = NULL;
++	}
+ 
+ 	if (!aconnector->dc_sink) {
+ 		struct dc_sink *dc_sink;
+-- 
+2.17.1
+