a26871e7ff
During acpi_cmbat_attach() the acpi_cmbat_init_battery() notification handler is registered. It has been observed this notification handler can be called instantly, before the attach routine has returned. In the notification handler there is a call to device_is_attached() which returns false. Because the softc is set we know an attach is in progress and the fix is simply to wait and try again in this case. Reviewed by: avg @ MFC after: 1 week