From: Sathya Perla <sathya.perla@emulex.com>
Date: Mon, 22 Aug 2011 19:41:53 +0000 (+0000)
Subject: be2net: fix erx->rx_drops_no_frags wrap around
X-Git-Tag: v3.2-rc1~129^2~416
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09c1c68f2239dcd99b76be2c44e84811fba273db;p=pandora-kernel.git

be2net: fix erx->rx_drops_no_frags wrap around

The rx_drops_no_frags HW counter for RSS rings is 16bits in HW and can
wraparound often. Maintain a 32-bit accumulator in the driver to prevent
frequent wraparound.

Also, incorporated Eric's feedback to use ACCESS_ONCE() for the accumulator
write.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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