drm/amdgpu/ttm: Fix memory leak userptr pages

[ Upstream commit 0f6f9dd490d524930081a6ef1d60171ce39220b9 ]

If userptr pages have been pinned but not bounded,
they remain uncleared.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Gomez <daniel@qtec.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index a0248d78190f2c1d016e94be98ddf0d55262d4ff..06a662ea33ddfad11aebf130a9b28b360b913b77 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1254,13 +1254,13 @@ static void amdgpu_ttm_backend_unbind(struct ttm_bo_device *bdev,
        struct amdgpu_ttm_tt *gtt = (void *)ttm;
        int r;
 
-       if (!gtt->bound)
-               return;
-
        /* if the pages have userptr pinning then clear that first */
        if (gtt->userptr)
                amdgpu_ttm_tt_unpin_userptr(bdev, ttm);
 
+       if (!gtt->bound)
+               return;
+
        if (gtt->offset == AMDGPU_BO_INVALID_OFFSET)
                return;