From: Andrew Morton <akpm@osdl.org>

WARNING: "tty_mutex" [arch/sparc64/solaris/solaris.ko] undefined!

Cc: Alan Cox <alan@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/char/tty_io.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN drivers/char/tty_io.c~solaris-emulation-incorrect-tty-locking-fix-2 drivers/char/tty_io.c
--- a/drivers/char/tty_io.c~solaris-emulation-incorrect-tty-locking-fix-2
+++ a/drivers/char/tty_io.c
@@ -129,6 +129,7 @@ LIST_HEAD(tty_drivers);			/* linked list
 /* Semaphore to protect creating and releasing a tty. This is shared with
    vt.c for deeply disgusting hack reasons */
 DEFINE_MUTEX(tty_mutex);
+EXPORT_SYMBOL(tty_mutex);
 
 #ifdef CONFIG_UNIX98_PTYS
 extern struct tty_driver *ptm_driver;	/* Unix98 pty masters; for /dev/ptmx */
_