[PATCH] Revert "drm/amdgpu: remove vm sanity check from amdgpu_vm_make_compute" for Raven

[Jesse.Zhang]

fix the issue when run clinfo:
"amdgpu: Failed to create process VM object".

when amdgpu initialized, seq64 do mampping and update bo mapping in vm page table.
But when clifo run. It also initializes a vm for a process device through the function kfd_process_device_init_vm
and ensure the root PD is clean through the function amdgpu_vm_pt_is_root_clean.
So they have a conflict, and clinfo  always failed.

Signed-off-by: Jesse Zhang <Jesse.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index ed4a8c5d26d7..0bc0bc75be15 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2361,12 +2361,6 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, struct amdgpu_vm *vm)
 	 * changing any other state, in case it fails.
 	 */
 	if (pte_support_ats != vm->pte_support_ats) {
-		/* Sanity checks */
-		if (!amdgpu_vm_pt_is_root_clean(adev, vm)) {
-			r = -EINVAL;
-			goto unreserve_bo;
-		}
-
 		vm->pte_support_ats = pte_support_ats;
 		r = amdgpu_vm_pt_clear(adev, vm, to_amdgpu_bo_vm(vm->root.bo),
 				       false);
-- 
2.34.1