1 files changed, 49 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0150-amdgpu-dce11-Remove-division-from-dce_v11_0_vblank_w.patch b/common/recipes-kernel/linux/files/0150-amdgpu-dce11-Remove-division-from-dce_v11_0_vblank_w.patch
new file mode 100644
index 00000000..22e759f0
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0150-amdgpu-dce11-Remove-division-from-dce_v11_0_vblank_w.patch
@@ -0,0 +1,49 @@
+From f53cc5d2a8d79ee93befd170a94a385ae700d35a Mon Sep 17 00:00:00 2001
+From: Tom St Denis <tom.stdenis@amd.com>
+Date: Tue, 15 Dec 2015 13:01:49 -0500
+Subject: [PATCH 0150/1110] amdgpu/dce11: Remove division from
+ dce_v11_0_vblank_wait()
+
+Mimics odd behaviour where (i++ % 100 == 0) is true in the first iteration of each loop...
+
+Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
+Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 8 +++++---
+ 1 file changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+index 8701661..80be62a 100644
+--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
++++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+@@ -211,7 +211,7 @@ static bool dce_v11_0_is_counter_moving(struct amdgpu_device *adev, int crtc)
+  */
+ static void dce_v11_0_vblank_wait(struct amdgpu_device *adev, int crtc)
+ {
+-	unsigned i = 0;
++	unsigned i = 100;
+ 
+ 	if (crtc >= adev->mode_info.num_crtc)
+ 		return;
+@@ -223,14 +223,16 @@ static void dce_v11_0_vblank_wait(struct amdgpu_device *adev, int crtc)
+ 	 * wait for another frame.
+ 	 */
+ 	while (dce_v11_0_is_in_vblank(adev, crtc)) {
+-		if (i++ % 100 == 0) {
++		if (i++ == 100) {
++			i = 0;
+ 			if (!dce_v11_0_is_counter_moving(adev, crtc))
+ 				break;
+ 		}
+ 	}
+ 
+ 	while (!dce_v11_0_is_in_vblank(adev, crtc)) {
+-		if (i++ % 100 == 0) {
++		if (i++ == 100) {
++			i = 0;
+ 			if (!dce_v11_0_is_counter_moving(adev, crtc))
+ 				break;
+ 		}
+-- 
+2.7.4
+