From: Michael Büsch <m@bues.ch>
Date: Mon, 4 Jul 2011 17:51:11 +0000 (+0200)
Subject: b43: Add RX side DMA memory barrier
X-Git-Tag: v3.1-rc1~316^2~189^2^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73e6cdcf479ce3a8d33a726f0477473db35a4b2e;p=pandora-kernel.git

b43: Add RX side DMA memory barrier

This adds a memory barrier to ensure the writes to the ring memory
are committed before the DMA ring pointer is updated.
We do a similar thing on the TX side already.

Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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