[PATCH] Increase AMDGPU_MAX_UVD_INSTANCES to 3

[Timothy Pearson]

amdgpu_fence_driver_start_ring() attempts to access
UVD instance 2 during setup, while the existing UVD
instance count only allows instances 0 and 1.

Increase AMDGPU_MAX_UVD_INSTANCES by one to avoid the
invalid array access.

Caught by UBSAN.

Signed-off-by: Timothy Pearson <tpearson at raptorengineering.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h
index 8b23a1b00c76..4a47cb570af7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.h
@@ -31,7 +31,7 @@
 #define AMDGPU_UVD_SESSION_SIZE		(50*1024)
 #define AMDGPU_UVD_FIRMWARE_OFFSET	256
 
-#define AMDGPU_MAX_UVD_INSTANCES			2
+#define AMDGPU_MAX_UVD_INSTANCES			3
 
 #define AMDGPU_UVD_FIRMWARE_SIZE(adev)    \
 	(AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(((const struct common_firmware_header *)(adev)->uvd.fw->data)->ucode_size_bytes) + \
-- 
2.17.1