1 files changed, 40 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0558-drm-amdgpu-Fix-max_vblank_count-value-for-current-di.patch b/common/recipes-kernel/linux/files/0558-drm-amdgpu-Fix-max_vblank_count-value-for-current-di.patch
new file mode 100644
index 00000000..e1bf7394
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0558-drm-amdgpu-Fix-max_vblank_count-value-for-current-di.patch
@@ -0,0 +1,40 @@
+From 5a6adfa20b622a273205e33b20c12332aa7eb724 Mon Sep 17 00:00:00 2001
+From: Alex Deucher <alexander.deucher@amd.com>
+Date: Tue, 22 Sep 2015 10:06:45 -0400
+Subject: [PATCH 0558/1050] drm/amdgpu: Fix max_vblank_count value for current
+ display engines
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The value was much too low, which could cause the userspace visible
+vblank counter to move backwards when the hardware counter wrapped
+around.
+
+Ported from radeon commit:
+b0b9bb4dd51f396dcf843831905f729e74b0c8c0
+
+Reviewed-by: Christian König <christian.koenig@amd.com>
+Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Cc: stable@vger.kernel.org
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+index 0aba8e9..7c42ff6 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
+@@ -140,7 +140,7 @@ void amdgpu_irq_preinstall(struct drm_device *dev)
+  */
+ int amdgpu_irq_postinstall(struct drm_device *dev)
+ {
+-	dev->max_vblank_count = 0x001fffff;
++	dev->max_vblank_count = 0x00ffffff;
+ 	return 0;
+ }
+ 
+-- 
+1.9.1
+