From 99ee7b5f3a68324807650f650f2613bbe281627f Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Fri, 21 Dec 2007 17:12:55 +0800
Subject: [PATCH] [Blackfin] serial driver: Fix bug serial driver in DMA mode
 spams history to console on shell restart

http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=2920
Fix by increasing buffer tail immediately before starting tx dma.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
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Reading git-format-patch failed