From: Greg Kroah-Hartman gregkh@linuxfoundation.org
From: Daniele Palmas dnlplm@gmail.com
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 --- drivers/net/usb/qmi_wwan.c | 14 -------------- 1 file changed, 14 deletions(-)
--- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -378,13 +378,6 @@ static ssize_t add_mux_store(struct devi goto err; }
- /* we don't want to modify a running netdev */ - if (netif_running(dev->net)) { - netdev_err(dev->net, "Cannot change a running device\n"); - ret = -EBUSY; - goto err; - } - ret = qmimux_register_device(dev->net, mux_id); if (!ret) { info->flags |= QMI_WWAN_FLAG_MUX; @@ -414,13 +407,6 @@ static ssize_t del_mux_store(struct devi if (!rtnl_trylock()) return restart_syscall();
- /* we don't want to modify a running netdev */ - if (netif_running(dev->net)) { - netdev_err(dev->net, "Cannot change a running device\n"); - ret = -EBUSY; - goto err; - } - del_dev = qmimux_find_dev(dev, mux_id); if (!del_dev) { netdev_err(dev->net, "mux_id not present\n");