drm/amdkfd: allow unregister process with queues

Sometimes we might unregister process that have queues, because we couldn't
preempt the queues. Until now we blocked it with BUG_ON but instead just
print it as debug.
Reviewed-by: NBen Goz <ben.goz@amd.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c

@@ -430,9 +430,10 @@ static int unregister_process_nocpsch(struct device_queue_manager *dqm,
 
 	BUG_ON(!dqm || !qpd);
 
-	BUG_ON(!list_empty(&qpd->queues_list));
+	pr_debug("In func %s\n", __func__);
 
-	pr_debug("kfd: In func %s\n", __func__);
+	pr_debug("qpd->queues_list is %s\n",
+			list_empty(&qpd->queues_list) ? "empty" : "not empty");
 
 	retval = 0;
 	mutex_lock(&dqm->lock);