[PATCH 1/2] drm/amdgpu: use CPU to update VM during GPU reset

[Lang Yu]

drm sched is stopped and SDMA mode is not available,
while CPU mode worked well in such a case.

Use case,
amdgpu_do_asic_reset
amdgpu_device_ip_late_init
umsch_mm_late_init
umsch_mm_test
amdgpu_vm_init

Signed-off-by: Lang Yu <Lang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 8af3f0fd3073..af53f9cfcc40 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2404,8 +2404,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 
 	vm->is_compute_context = false;
 
-	vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode &
-				    AMDGPU_VM_USE_CPU_FOR_GFX);
+	vm->use_cpu_for_update = !!(amdgpu_in_reset(adev) ||
+		adev->vm_manager.vm_update_mode & AMDGPU_VM_USE_CPU_FOR_GFX);
 
 	DRM_DEBUG_DRIVER("VM update mode is %s\n",
 			 vm->use_cpu_for_update ? "CPU" : "SDMA");
-- 
2.25.1