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-rw-r--r--common/recipes-kernel/linux/files/0828-drm-amd-dal-Remove-wait_for_vblanks-call-on-atomic_c.patch31
1 files changed, 31 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0828-drm-amd-dal-Remove-wait_for_vblanks-call-on-atomic_c.patch b/common/recipes-kernel/linux/files/0828-drm-amd-dal-Remove-wait_for_vblanks-call-on-atomic_c.patch
new file mode 100644
index 00000000..3d3971c9
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0828-drm-amd-dal-Remove-wait_for_vblanks-call-on-atomic_c.patch
@@ -0,0 +1,31 @@
+From 221c063620a95be63d4e14c2933b1f81999d7452 Mon Sep 17 00:00:00 2001
+From: Jordan Lazare <Jordan.Lazare@amd.com>
+Date: Tue, 23 Feb 2016 12:14:16 -0500
+Subject: [PATCH 0828/1110] drm/amd/dal: Remove wait_for_vblanks call on
+ atomic_commit
+
+It appears to be superfluous, and having the call was causing a performance regression
+
+Signed-off-by: Jordan Lazare <Jordan.Lazare@amd.com>
+Reviewed-by: Tony Cheng <tony.cheng@amd.com>
+Acked-by: Harry Wentland <harry.wentland@amd.com>
+---
+ drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c
+index 84ce0bb..f469017 100644
+--- a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c
++++ b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm_types.c
+@@ -2391,8 +2391,6 @@ int amdgpu_dm_atomic_commit(
+ 0);
+ }
+
+- drm_atomic_helper_wait_for_vblanks(dev, state);
+-
+ /* In this state all old framebuffers would be unpinned */
+
+ drm_atomic_helper_cleanup_planes(dev, state);
+--
+2.7.4
+