tty: Unexport system-wide tty_mutex

tty_mutex is a core, system-wide lock; there is no reason for any
code outside the tty core to have direct access.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2016-01-09 21:35:18 -08:00 • committed by Greg Kroah-Hartman
commit d1d027eff5