[PATCH] drm/amdgpu: add ring test for page queue

[Huang Rui]

We add page queue for sdma to update page table. So here it also needs ring test
to verify it workable during the initialization.

Signed-off-by: Huang Rui <ray.huang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 6ad4fda..ede149a 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1150,6 +1150,15 @@ static int sdma_v4_0_start(struct amdgpu_device *adev)
 			return r;
 		}
 
+		if (adev->sdma.has_page_queue) {
+			ring = &adev->sdma.instance[i].page;
+			r = amdgpu_ring_test_ring(ring);
+			if (r) {
+				ring->ready = false;
+				return r;
+			}
+		}
+
 		if (adev->mman.buffer_funcs_ring == ring)
 			amdgpu_ttm_set_buffer_funcs_status(adev, true);
 	}
-- 
2.7.4