Disabled ser_putc for reporting debug internal to tty over the serial line.

Disabled return statement for serial debug input in the kernel.

drivers/tty/console.c

@@ -1170,6 +1170,9 @@ int c;				/* character to print */
   if (c != 0) {
 	if (c == '\n') cons_putk('\r');
 	out_char(&cons_table[0], (int) c);
+#if 0
+	ser_putc(c);
+#endif
   } else {
 	flush(&cons_table[0]);
   }

drivers/tty/rs232.c

@@ -891,6 +891,10 @@ register rs232_t *rs;		/* line with input interrupt */
 
   unsigned long c;
 
+#if 0	/* Enable this if you want serial input in the kernel */
+  return;
+#endif
+
 #if (MACHINE == IBM_PC)
   sys_inb(rs->recv_port, &c);
 #else /* MACHINE == ATARI */