--- Gnu-Mach/device/tty.h	2020/09/02 04:45:28	1.1.1.2
+++ Gnu-Mach/device/tty.h	2020/09/02 04:47:50	1.1.1.3
@@ -72,8 +72,8 @@ struct tty {
  * Items beyond this point should be removed to device-specific
  * extension structures.
  */
-	int		(*t_getstat)();	/* routine to get status */
-	int		(*t_setstat)();	/* routine to set status */
+	io_return_t	(*t_getstat)(dev_t, int, int *, natural_t *);	/* routine to get status */
+	io_return_t	(*t_setstat)(dev_t, int, int *, natural_t);	/* routine to set status */
 	dev_ops_t	t_tops;		/* another device to possibly
 					   push through */
 };
@@ -184,7 +184,7 @@ extern boolean_t tty_portdeath(
 #define TS_TRANSLATE	0x00100000	/* translation device enabled */
 #define TS_KDB		0x00200000	/* should enter kdb on ALT */
 
-#define	TS_MIN_TO_RCV	0x00400000	/* character recived during 
+#define	TS_MIN_TO_RCV	0x00400000	/* character received during
 					   receive timeout interval */
 
 /* flags - old names defined in terms of new ones */
@@ -234,6 +234,4 @@ struct ldisc_switch {
 
 extern struct ldisc_switch	linesw[];
 
-extern void chario_init(void);
-
 #endif	/* _DEVICE_TTY_H_ */