From 0c0c47bc40a2e358d593b2d7fb93b50027fbfc0c Mon Sep 17 00:00:00 2001
From: Vlad Lungu <vlad.lungu@windriver.com>
Date: Thu, 17 Oct 2013 14:08:06 -0700
Subject: [PATCH] tty: xuartps: Implement BREAK detection, add SYSRQ support

The Cadence UART does not do break detection, even if the
datasheet says it does. This patch adds break detection in
software (tested in 8N1 mode only) and enables SYSRQ,
allowing for Break-g to enter KDB and all the other goodies.

Signed-off-by: Vlad Lungu <vlad.lungu@windriver.com>
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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