UVD: Pick fix by ckoenig to increase decoding speed on radeon_si

packages/linux/patches/3.13.1/linux-801-fix-radeon-si-performance-issue.patch

@@ -0,0 +1,32 @@
+From b091ef6be8a4d8f3c04c2ff15f6d20364438e8fc Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
+Date: Thu, 30 Jan 2014 18:54:24 +0100
+Subject: [PATCH] drm/radeon: fix UVD IRQ support on SI
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Otherwise decoding isn't really useable.
+
+Signed-off-by: Christian König <christian.koenig@amd.com>
+---
+ drivers/gpu/drm/radeon/si.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
+index 07ce587..a22df95 100644
+--- a/drivers/gpu/drm/radeon/si.c
++++ b/drivers/gpu/drm/radeon/si.c
+@@ -6334,6 +6334,10 @@ restart_ih:
+ 				break;
+ 			}
+ 			break;
++		case 124: /* UVD */
++			DRM_DEBUG("IH: UVD int: 0x%08x\n", src_data);
++			radeon_fence_process(rdev, R600_RING_TYPE_UVD_INDEX);
++			break;
+ 		case 146:
+ 		case 147:
+ 			addr = RREG32(VM_CONTEXT1_PROTECTION_FAULT_ADDR);
+-- 
+1.8.1.2