--- zzzz-none-000/linux-2.6.32.61/drivers/char/tty_io.c	2013-06-10 09:43:48.000000000 +0000
+++ ar9-7330-650/linux-2.6.32.61/drivers/char/tty_io.c	2013-02-11 16:30:45.000000000 +0000
@@ -1846,6 +1846,7 @@
 static int tty_open(struct inode *inode, struct file *filp)
 {
 	int ret;
+    /*--- printk("tty opened by (%s)\n", current->comm); ---*/
 
 	lock_kernel();
 	ret = __tty_open(inode, filp);