From 99ecb001f52ef10ebf686d4e55b1cf64b1e56aa6 Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@hurleysoftware.com>
Date: Sun, 6 Jul 2014 11:29:53 -0400
Subject: [PATCH] serial: arc_uart: Use uart_circ_empty() for open-coded
 comparison

Replace open-coded test for empty tx ring buffer with equivalent
helper function, uart_circ_empty(). No functional change.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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