1 files changed, 13 insertions, 5 deletions

diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index cd991a0f75bb..1ebe3259be0d 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -512,11 +512,19 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
         }
         tmp = le32_to_cpu(u.init_c->max_transfer_size);
         if (tmp < dev->hard_mtu) {
-                dev_err(&intf->dev,
-                        "dev can't take %u byte packets (max %u)\n",
-                        dev->hard_mtu, tmp);
-                retval = -EINVAL;
-                goto fail_and_release;
+                if (tmp <= net->hard_header_len) {
+                        dev_err(&intf->dev,
+                                "dev can't take %u byte packets (max %u)\n",
+                                dev->hard_mtu, tmp);
+                        retval = -EINVAL;
+                        goto fail_and_release;
+                }
+                dev->hard_mtu = tmp;
+                net->mtu = dev->hard_mtu - net->hard_header_len;
+                dev_warn(&intf->dev,
+                         "dev can't take %u byte packets (max %u), "
+                         "adjusting MTU to %u\n",
+                         dev->hard_mtu, tmp, net->mtu);
         }
 
         /* REVISIT:  peripheral "alignment" request is ignored ... */