From c25a1ad7077ab9914bad1374df8b9cdb9bf5f0ad Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Tue, 10 Dec 2013 14:54:47 +0100
Subject: [PATCH] serial: pl011: fix fall back from DMA to interrupt mode

When falling back from DMA to interrupt mode the receive interrupt has to
be re-enabled to catch new incoming data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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