[PATCH v5 3/9] drm/amdgpu: rework the userq doorbell object destroy

[Prike Liang]

This patch aims to unify and destroy the userq doorbell objects at
mes_userq_mqd_destroy(), and this change will also help with unpinning
and destroying the userq doorbell objects for amdgpu_userq_mgr_fini()
during releasing the drm files.

Signed-off-by: Prike Liang <Prike.Liang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c  | 1 -
 drivers/gpu/drm/amd/amdgpu/mes_userqueue.c | 4 ++++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index 3d2a7f8946cf..f1c41b1114d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -317,7 +317,6 @@ amdgpu_userq_destroy(struct drm_file *filp, int queue_id)
 		amdgpu_bo_unpin(queue->db_obj.obj);
 		amdgpu_bo_unreserve(queue->db_obj.obj);
 	}
-	amdgpu_bo_unref(&queue->db_obj.obj);
 	r = amdgpu_userq_unmap_helper(uq_mgr, queue);
 	/*TODO: It requires a reset for userq hw unmap error*/
 	if (unlikely(r != AMDGPU_USERQ_STATE_UNMAPPED)) {
diff --git a/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c b/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
index 1457fb49a794..dbacdfcb6f7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_userqueue.c
@@ -336,6 +336,10 @@ mes_userq_mqd_destroy(struct amdgpu_userq_mgr *uq_mgr,
 		      struct amdgpu_usermode_queue *queue)
 {
 	amdgpu_userq_destroy_object(uq_mgr, &queue->fw_obj);
+	/*Validate the doorbell obj whether has unpinned by amdgpu_userq_destroy()*/
+	if (queue->db_obj.obj->tbo.pin_count)
+		amdgpu_bo_unpin(queue->db_obj.obj);
+	amdgpu_userq_destroy_object(uq_mgr, &queue->db_obj);
 	kfree(queue->userq_prop);
 	amdgpu_userq_destroy_object(uq_mgr, &queue->mqd);
 }
-- 
2.34.1