From: Monk Liu <Monk.Liu@amd.com>
Date: Wed, 24 Jan 2018 12:20:32 +0800
Subject: drm/amdgpu: move WB_FREE to correct place
Git-commit: a4ef6edc8e87bee656a5feaedb0bb167acd9d360
Patch-mainline: v4.16-rc4
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

WB_FREE should be put after all engines's hw_fini
done, otherwise the invalid wptr/rptr_addr would still
be used by engines which trigger abnormal bugs.

This fixes couple DMAR reading error in host side for SRIOV
after guest kmd is unloaded.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1455,11 +1455,6 @@ static int amdgpu_device_ip_fini(struct
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.hw)
 			continue;
-		if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
-			amdgpu_free_static_csa(adev);
-			amdgpu_device_wb_fini(adev);
-			amdgpu_device_vram_scratch_fini(adev);
-		}
 
 		if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_UVD &&
 			adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_VCE) {
@@ -1486,6 +1481,13 @@ static int amdgpu_device_ip_fini(struct
 	for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
 		if (!adev->ip_blocks[i].status.sw)
 			continue;
+
+		if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
+			amdgpu_free_static_csa(adev);
+			amdgpu_device_wb_fini(adev);
+			amdgpu_device_vram_scratch_fini(adev);
+		}
+
 		r = adev->ip_blocks[i].version->funcs->sw_fini((void *)adev);
 		/* XXX handle errors */
 		if (r) {