[PATCH 04/22] drm/amd: fix the warning unchecking return vaule for sdma_v7

[Jesse Zhang]

check ring allocate success before emit preempt ib

Signed-off-by: Jesse Zhang <jesse.zh...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c 
b/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
index 0b5af1c50461..7db53a96cff0 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v7_0.c
@@ -1347,7 +1347,11 @@ static int sdma_v7_0_ring_preempt_ib(struct amdgpu_ring 
*ring)
 
        /* emit the trailing fence */
        ring->trail_seq += 1;
-       amdgpu_ring_alloc(ring, 10);
+       r = amdgpu_ring_alloc(ring, 10);
+       if (r) {
+               DRM_ERROR("ring %d failed to be allocated \n", ring->idx);
+               return r;
+       }
        sdma_v7_0_ring_emit_fence(ring, ring->trail_fence_gpu_addr,
                                  ring->trail_seq, 0);
        amdgpu_ring_commit(ring);
-- 
2.25.1