commit 6c59cff38e66584ae3ac6c2f0cbd8d039c710ba7 upstream. There's no reason for preventing the creation and removal of qmimux network interfaces when the underlying interface is up. This makes qmi_wwan mux implementation more similar to the rmnet one, simplifying userspace management of the same logical interfaces. Fixes: c6adf77953bc ("net: usb: qmi_wwan: add qmap mux protocol support") Reported-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Acked-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>