Make compiling with 0 pty's or rs232 lines possible (Al's patch)

diff --git a/drivers/tty/tty.c b/drivers/tty/tty.c
index 805e555f0597c4671f7cbf07801be2c919b74420..9961f393f89b15845bf34c98a480f61879332593 100644 (file)
--- a/drivers/tty/tty.c
+++ b/drivers/tty/tty.c
@@ -204,8 +204,10 @@ PUBLIC void main(void)
        case HARD_INT: {                /* hardware interrupt notification */
                if (tty_mess.NOTIFY_ARG & kbd_irq_set)
                        kbd_interrupt(&tty_mess);/* fetch chars from keyboard */
+#if NR_RS_LINES > 0
                if (tty_mess.NOTIFY_ARG & rs_irq_set)
                        rs_interrupt(&tty_mess);/* serial I/O */
+#endif
                expire_timers();        /* run watchdogs of expired timers */
                continue;               /* contine to check for events */
        }
@@ -346,8 +348,10 @@ message *m_ptr;
        }
   }
 
+#if NR_PTYS > 0
   if (!event_found)
        event_found = pty_status(m_ptr);
+#endif
 
   if (! event_found) {
        /* No events of interest were found. Return an empty message. */
@@ -877,8 +881,10 @@ tty_t *tp;                 /* TTY to check for events. */
   }
   if(tp->tty_select_ops)
        select_retry(tp);
+#if NR_PTYS > 0
   if(ispty(tp))
        select_retry_pty(tp);
+#endif
 }
 
 /*===========================================================================*