From 08f937f4bcbe156773834935018c9bf7874a42f3 Mon Sep 17 00:00:00 2001
From: Janusz Uzycki <j.uzycki@elproma.com.pl>
Date: Fri, 14 Nov 2014 23:24:33 +0100
Subject: [PATCH] serial: mxs-auart: fix gpio change detection on interrupt

mxs_auart_modem_status() did't detect gpio's state change
because s->mctrl_prev was modified before by mctrl_gpio_get().
The patch introduces mctrl_temp variable to fix the bug.

Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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