From: Russell King <rmk@dyn-67.arm.linux.org.uk>
Date: Mon, 29 Sep 2008 18:50:59 +0000 (+0100)
Subject: [ARM] dma: don't touch cache on dma_*_for_cpu()
X-Git-Tag: v2.6.28-rc1~293^2~9^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=309dbbabee7b19e003e1ba4b98f43d28f390a84e;p=pandora-kernel.git

[ARM] dma: don't touch cache on dma_*_for_cpu()

As per the dma_unmap_* calls, we don't touch the cache when a DMA
buffer transitions from device to CPU ownership.  Presently, no
problems have been identified with speculative cache prefetching
which in itself is a new feature in later architectures.  We may
have to revisit the DMA API later for these architectures anyway.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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