From 1fdc31065fdf95ded3b1960d1426e1da43b297ef Mon Sep 17 00:00:00 2001
From: Alexander Shiyan <shc_work@mail.ru>
Date: Tue, 3 Jun 2014 18:54:43 +0400
Subject: [PATCH] serial: core: Make enable_ms() optional

This patch makes enable_ms() optional, so we can eliminate a lot of
empty enable_ms() implementations from driver code.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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