int sppp_change_mtu(struct net_device *dev, int new_mtu) 
static int sppp_change_mtu(struct net_device *dev, int new_mtu) 
int sppp_change_mtu(struct net_device *dev, int new_mtu){	if(new_mtu<128||new_mtu>PPP_MTU||(dev->flags&IFF_UP))		return -EINVAL;	dev->mtu=new_mtu;	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/7665a08928f241247afe8c76865cdbe4ef5489bf/syncppp.c/buggy/drivers/net/wan/syncppp.c