From: Vitja Makarov <vitja.makarov@gmail.com>
Date: Tue, 7 Apr 2009 02:00:31 +0000 (-0700)
Subject: Blackfin SPI Driver: ensure cache coherency before doing DMA
X-Git-Tag: v2.6.30-rc1~125
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8cf5858c51f88208fe56b195251ab4f21265386c;p=pandora-kernel.git

Blackfin SPI Driver: ensure cache coherency before doing DMA

Flush or invalidate caches before doing DMA transfer, if needed.

[Mike Frysinger <vapier.adi@gmail.com>: add comment to address the
issue "Full duplex only works for non-DMA transfers".]
Signed-off-by: Vitja Makarov <vitja.makarov@gmail.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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