struct serport *serport = (struct serport*) tty->disc_data; 
struct serport *serport = (struct serport *) tty->disc_data;  
static void serport_ldisc_close(struct tty_struct *tty){	struct serport *serport = (struct serport*) tty->disc_data;	kfree(serport);}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/1ff2c873ca11f9e6abffb004b908756b27597672/serport.c/clean/drivers/input/serio/serport.c