diff options
Diffstat (limited to 'drivers/net/wan/x25_asy.c')
| -rw-r--r-- | drivers/net/wan/x25_asy.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c index d7a65e141d1..fa9fdfa128c 100644 --- a/drivers/net/wan/x25_asy.c +++ b/drivers/net/wan/x25_asy.c @@ -122,13 +122,16 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu) { struct x25_asy *sl = netdev_priv(dev); unsigned char *xbuff, *rbuff; - int len = 2 * newmtu; + int len; + if (newmtu > 65534) + return -EINVAL; + + len = 2 * newmtu; xbuff = kmalloc(len + 4, GFP_ATOMIC); rbuff = kmalloc(len + 4, GFP_ATOMIC); if (xbuff == NULL || rbuff == NULL) { - netdev_warn(dev, "unable to grow X.25 buffers, MTU change cancelled\n"); kfree(xbuff); kfree(rbuff); return -ENOMEM; @@ -231,7 +234,7 @@ static void x25_asy_encaps(struct x25_asy *sl, unsigned char *icp, int len) } p = icp; - count = x25_asy_esc(p, (unsigned char *) sl->xbuff, len); + count = x25_asy_esc(p, sl->xbuff, len); /* Order of next two lines is *very* important. * When we are sending a little amount of data, |