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path: root/drivers/net/usb/cdc_ncm.c
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Diffstat (limited to 'drivers/net/usb/cdc_ncm.c')
-rw-r--r--drivers/net/usb/cdc_ncm.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 877c9516e781..7141817946f0 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -740,10 +740,6 @@ static void cdc_ncm_free(struct cdc_ncm_ctx *ctx)
int cdc_ncm_change_mtu(struct net_device *net, int new_mtu)
{
struct usbnet *dev = netdev_priv(net);
- int maxmtu = cdc_ncm_max_dgram_size(dev) - cdc_ncm_eth_hlen(dev);
-
- if (new_mtu <= 0 || new_mtu > maxmtu)
- return -EINVAL;
net->mtu = new_mtu;
cdc_ncm_set_dgram_size(dev, new_mtu + cdc_ncm_eth_hlen(dev));
@@ -909,6 +905,7 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_
/* must handle MTU changes */
dev->net->netdev_ops = &cdc_ncm_netdev_ops;
+ dev->net->max_mtu = cdc_ncm_max_dgram_size(dev) - cdc_ncm_eth_hlen(dev);
return 0;