[PATCH 2/9] drm/amdgpu: bail out for userq unmap error

[Prike Liang]

Before destroy the userq buffer object requires validating
the userq unmap status.

Signed-off-by: Prike Liang <Prike.Liang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index f67969312c39..8eea0e1e1b6a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -319,6 +319,12 @@ amdgpu_userq_destroy(struct drm_file *filp, int queue_id)
 	}
 	amdgpu_bo_unref(&queue->db_obj.obj);
 	r = amdgpu_userq_unmap_helper(uq_mgr, queue);
+	if (r != AMDGPU_USERQ_STATE_UNMAPPED) {
+		drm_dbg_driver(adev_to_drm(uq_mgr->adev), "Can't unmap the queue for destroying.\n");
+		mutex_unlock(&uq_mgr->userq_mutex);
+		/*TODO: before return may need to a reset*/
+		return r;
+	}
 	amdgpu_userq_cleanup(uq_mgr, queue, queue_id);
 	mutex_unlock(&uq_mgr->userq_mutex);
 
-- 
2.34.1