From: Alex Deucher <alexander.deucher@amd.com>
Date: Thu, 13 Jul 2017 15:37:11 -0400
Subject: drm/amdgpu: remove VM shadow WARN_ONs
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Git-commit: 6927798572a930a4a56f66eb36916d861ff56ad6
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Printing a warning into the logs that we will certainly run into a BUG() is
completely nonsense, the BUG() is more than noisy enough.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1044,8 +1044,7 @@ static int amdgpu_vm_update_level(struct
 	params.adev = adev;
 	shadow = parent->bo->shadow;
 
-	WARN_ON(vm->use_cpu_for_update && shadow);
-	if (vm->use_cpu_for_update && !shadow) {
+	if (vm->use_cpu_for_update) {
 		r = amdgpu_bo_kmap(parent->bo, (void **)&pd_addr);
 		if (r)
 			return r;
@@ -1310,9 +1309,6 @@ static int amdgpu_vm_update_ptes(struct
 			r = amdgpu_bo_kmap(pt, (void *)&pe_start);
 			if (r)
 				return r;
-
-			WARN_ONCE(pt->shadow,
-				  "CPU VM update doesn't support shadow pages");
 		} else {
 			if (pt->shadow) {
 				pe_start = amdgpu_bo_gpu_offset(pt->shadow);