From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Wed, 31 Mar 2010 22:13:05 +0000 (+0000)
Subject: acenic: fix the misusage of zero dma address
X-Git-Tag: v2.6.35-rc1~473^2~630
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07e7de8f7a7146b3ac77c52ebd91c93a8370d9a8;p=pandora-kernel.git

acenic: fix the misusage of zero dma address

acenic wrongly assumes that zero is an invalid dma address (calls
dma_unmap_page for only non zero dma addresses). Zero is a valid dma
address on some architectures. The dma length can be used here.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
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