From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 27 Jul 2017 19:30:27 +0000 (-0400)
Subject: drm/amdgpu/sdma4: drop hdp flush from wptr shadow update
X-Git-Tag: microblaze-4.14-rc3~11^2~28^2~30
X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=a67094432da75d2769e7c35323f26c6873908e6c;p=linux-2.6-microblaze.git

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 f970a4a6b666..587bf508c794 100644
--- 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);
 				}
 			}
 		}