From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
From: Daniele Palmas <dnlplm@xxxxxxxxx>
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@xxxxxxxxxxxxx>
Signed-off-by: Daniele Palmas <dnlplm@xxxxxxxxx>
Acked-by: Bjørn Mork <bjorn@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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");
