1 files changed, 38 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2628-drm-amd-display-check-if-modeset-is-required-before-.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2628-drm-amd-display-check-if-modeset-is-required-before-.patch
new file mode 100644
index 00000000..77fde1f1
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/2628-drm-amd-display-check-if-modeset-is-required-before-.patch
@@ -0,0 +1,38 @@
+From 4d86e5effb8623372ab091d27d036ba310f392db Mon Sep 17 00:00:00 2001
+From: Shirish S <shirish.s@amd.com>
+Date: Fri, 27 Oct 2017 03:25:55 +0000
+Subject: [PATCH 2628/4131] drm/amd/display: check if modeset is required
+ before adding plane
+
+Adding affected planes without checking if modeset is requested from the user space causes performance regression in video p/b scenarios when full screen p/b is not composited.
+
+Hence add a check before adding a plane as affected.
+
+bug: https://bugs.freedesktop.org/show_bug.cgi?id=103408
+
+Change-Id: Id51be32d8dffdb2627576addf6c5c3145201ce54
+Acked-by: Alex Deucher <alexander.deucher@amd.com>
+Reviewed-by: Harry Wentland <harry.wentland@amd.com>
+Signed-off-by: Shirish S <shirish.s@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+index b5af98d..0abcb16 100644
+--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+@@ -4896,6 +4896,9 @@ static int amdgpu_dm_atomic_check(struct drm_device *dev,
+ #else
+ 		for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+ #endif
++			if (!drm_atomic_crtc_needs_modeset(new_crtc_state))
++				continue;
++
+ 			if (!new_crtc_state->enable)
+ 				continue;
+ 
+-- 
+2.7.4
+