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Inside bus_add_driver(), one device might be added(device_add()) into the bus or probed which is triggered by deferred probe just after completing of driver_attach() and before 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)', so the device won't be probed by this driver. This patch moves the below line 'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)' before driver_attach() inside bus_add_driver() to fix the problem. Signed-off-by: Ming Lei <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>