Revert "drm/amdgpu: Don't change preferred domian when fallback GTT v5"

This reverts commit bbaf1871ea1d7b7021e350a3e8bb1ec8408c2030.

Felix reports this commit causes regression.
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c

@@ -56,11 +56,23 @@ int amdgpu_gem_object_create(struct amdgpu_device *adev, unsigned long size,
 		alignment = PAGE_SIZE;
 	}
 
+retry:
 	r = amdgpu_bo_create(adev, size, alignment, initial_domain,
 			     flags, type, resv, &bo);
 	if (r) {
+		if (r != -ERESTARTSYS) {
+			if (flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
+				flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
+				goto retry;
+			}
+
+			if (initial_domain == AMDGPU_GEM_DOMAIN_VRAM) {
+				initial_domain |= AMDGPU_GEM_DOMAIN_GTT;
+				goto retry;
+			}
 			DRM_DEBUG("Failed to allocate GEM object (%ld, %d, %u, %d)\n",
 				  size, initial_domain, alignment, r);
+		}
 		return r;
 	}
 	*obj = &bo->gem_base;

drivers/gpu/drm/amd/amdgpu/amdgpu_object.c

@@ -356,7 +356,6 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, unsigned long size,
 	struct amdgpu_bo *bo;
 	unsigned long page_align;
 	size_t acc_size;
-	u32 domains;
 	int r;
 
 	page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT;
@@ -418,23 +417,12 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev, unsigned long size,
 #endif
 
 	bo->tbo.bdev = &adev->mman.bdev;
-	domains = bo->preferred_domains;
-retry:
-	amdgpu_ttm_placement_from_domain(bo, domains);
+	amdgpu_ttm_placement_from_domain(bo, domain);
+
 	r = ttm_bo_init_reserved(&adev->mman.bdev, &bo->tbo, size, type,
 				 &bo->placement, page_align, &ctx, acc_size,
 				 NULL, resv, &amdgpu_ttm_bo_destroy);
-
-	if (unlikely(r && r != -ERESTARTSYS)) {
-		if (bo->flags & AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED) {
-			bo->flags &= ~AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
-			goto retry;
-		} else if (domains != bo->allowed_domains) {
-			domains = bo->allowed_domains;
-			goto retry;
-		}
-	}
-	if (unlikely(r))
+	if (unlikely(r != 0))
 		return r;
 
 	if (adev->gmc.visible_vram_size < adev->gmc.real_vram_size &&