drm/amdgpu: unbind GTT only when it is bound

Doesn't make much sense to clear the GTT when it was never filled.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index b50535c..8aa3fe6 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -733,6 +733,9 @@ static int amdgpu_ttm_backend_unbind(struct ttm_tt *ttm)
 {
        struct amdgpu_ttm_tt *gtt = (void *)ttm;
 
+       if (!amdgpu_ttm_is_bound(ttm))
+               return 0;
+
        /* unbind shouldn't be done for GDS/GWS/OA in ttm_bo_clean_mm */
        if (gtt->adev->gart.ready)
                amdgpu_gart_unbind(gtt->adev, gtt->offset, ttm->num_pages);