1 files changed, 48 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2561-drm-amd-display-Do-not-set-bandwidth-on-page-flips.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2561-drm-amd-display-Do-not-set-bandwidth-on-page-flips.patch
new file mode 100644
index 00000000..697e9fc4
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2561-drm-amd-display-Do-not-set-bandwidth-on-page-flips.patch
@@ -0,0 +1,48 @@
+From ea010bb352184f98686ce98f497635ec06dfc46b Mon Sep 17 00:00:00 2001
+From: "Leo (Sunpeng) Li" <sunpeng.li@amd.com>
+Date: Wed, 4 Oct 2017 12:47:13 -0400
+Subject: [PATCH 2561/4131] drm/amd/display: Do not set bandwidth on page
+ flips.
+
+Which removes a lockdep warning for a possible deadlock situation:
+
+While holding the drm event mutex (hard irq safe),
+dc_post_update_surfaces_to_stream eventually acquires the atom context
+lock, which is hard irq unsafe. We should only be calling it on full
+updates anyways.
+
+Also remove a redundant call to dc_post_update_surfaces_to_stream,
+dc_commit_updates_for_stream already calls it.
+
+Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
+Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
+---
+ drivers/gpu/drm/amd/display/dc/core/dc.c | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
+index 6b017d0..a324835 100644
+--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
+@@ -980,8 +980,6 @@ bool dc_commit_planes_to_stream(
+ 			new_plane_count,
+ 			dc_stream, stream_update, plane_states, state);
+ 
+-	dc_post_update_surfaces_to_stream(dc);
+-
+ 	kfree(stream_update);
+ 	return true;
+ }
+@@ -1418,7 +1416,8 @@ void dc_commit_updates_for_stream(struct dc *dc,
+ 				update_type,
+ 				context);
+ 
+-	dc_post_update_surfaces_to_stream(dc);
++	if (update_type >= UPDATE_TYPE_FULL)
++		dc_post_update_surfaces_to_stream(dc);
+ 
+ 	if (dc->current_state != context) {
+ 
+-- 
+2.7.4
+