drm/amdgpu: stop syncing PRT map operations

Requested by both Bas and Friedrich. Mapping PTEs as PRT doesn't need to
sync for anything.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Friedrich Vock <friedrich.vock@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 6b85581..8d9bf7a 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1161,7 +1161,7 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va,
        int r;
 
        amdgpu_sync_create(&sync);
-       if (clear || !bo) {
+       if (clear) {
                mem = NULL;
 
                /* Implicitly sync to command submissions in the same VM before
@@ -1176,6 +1176,10 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va,
                        if (r)
                                goto error_free;
                }
+       } else if (!bo) {
+               mem = NULL;
+
+               /* PRT map operations don't need to sync to anything. */
 
        } else {
                struct drm_gem_object *obj = &bo->tbo.base;