[PATCH] disable early console in console_init

x86-64 has an early console implementation which runs before the normal
console is initialized. To avoid duplicated output it needs to be
disabled when the real console starts. This patch adds an function call
for that to the appropiate part of console_init.

drivers/char/tty_io.c

@@ -121,6 +121,8 @@ extern struct tty_driver ptm_driver[];	/* Unix98 pty masters; for /dev/ptmx */
 extern struct tty_driver pts_driver[];	/* Unix98 pty slaves;  for /dev/ptmx */
 #endif
 
+extern void disable_early_printk(void);
+
 /*
  * redirect is the pseudo-tty that console output
  * is redirected to if asked by TIOCCONS.
@@ -2185,6 +2187,9 @@ void __init console_init(void)
 	 * set up the console device so that later boot sequences can 
 	 * inform about problems etc..
 	 */
+#ifdef CONFIG_EARLY_PRINTK
+	disable_early_printk();
+#endif
 #ifdef CONFIG_VT
 	con_init();
 #endif