From: Andrea Paterniani <a.paterniani@swapp-eng.it>
Date: Wed, 19 Nov 2008 23:36:26 +0000 (-0800)
Subject: spi_imx: full duplex dma corruption bugfix
X-Git-Tag: v2.6.28-rc6~35
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b45d6380c392e402adc460e4ccf7d41e0caf82a;p=pandora-kernel.git

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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