benet: fix the misusage of zero dma address
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Sun, 4 Apr 2010 21:40:18 +0000 (21:40 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 8 Apr 2010 03:59:26 +0000 (20:59 -0700)
commitb681ee77f8ad248b0fdcec2e5e8c4df6e757eba3
tree6857b8e1dac8847855eb4baaf3632f55035369a7
parentfac6da5b7a1b9779ba124ce92314d02378892855
benet: fix the misusage of zero dma address

benet driver 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>
Acked-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/benet/be_main.c