drm/amdgpu/sdma4: drop hdp flush from wptr shadow update

The wb buffer is in system memory, not vram so the flush
is useless.

Cc: Frank Min <Frank.Min@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index f970a4a..587bf50 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -313,7 +313,6 @@ static void sdma_v4_0_ring_set_wptr(struct amdgpu_ring *ring)
                                        offset = adev->sdma.instance[i].poll_mem_offs;
                                        atomic64_set((atomic64_t *)&adev->wb.wb[offset],
                                                     (ring->wptr << 2));
-                                       nbio_v6_1_hdp_flush(adev);
                                }
                        }
                }