[PATCH 1/3] drm/amdkfd: don't validate pinned BOs

[Lang Yu]

If a BO is pinned to VRAM and you try to validate it into GTT,
you will get an error.

Suggested-by: Christian König <christian.koenig at amd.com>
Signed-off-by: Lang Yu <Lang.Yu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index abf2fc421323..81bcffb510f4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -346,6 +346,9 @@ static int amdgpu_amdkfd_bo_validate(struct amdgpu_bo *bo, uint32_t domain,
 	struct ttm_operation_ctx ctx = { false, false };
 	int ret;
 
+	if (bo->tbo.pin_count)
+		return 0;
+
 	if (WARN(amdgpu_ttm_tt_get_usermm(bo->tbo.ttm),
 		 "Called with userptr BO"))
 		return -EINVAL;
-- 
2.25.1