From 3b45d6380c392e402adc460e4ccf7d41e0caf82a Mon Sep 17 00:00:00 2001
From: Andrea Paterniani <a.paterniani@swapp-eng.it>
Date: Wed, 19 Nov 2008 15:36:26 -0800
Subject: [PATCH] spi_imx: full duplex dma corruption bugfix

Fix unsafe order in dma mapping operation: always flush data from the
cache *BEFORE* invalidating it, to allow full duplex transfers where the
same buffer may be used for both writes and reads.

Signed-off-by: Andrea Paterniani <a.paterniani@swapp-eng.it>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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