net/mlx4_en: Doorbell is byteswapped in Little Endian archs

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iowrite32() will byteswap it's argument on big endian archs.
iowrite32be() will byteswap on little endian archs.
Since we don't want to do this unnecessary byteswap on the fast path,
doorbell is stored in the NIC's native endianness. Using the right
iowrite() according to the arch endianness.

CC: Wei Yang <weiyang@linux.vnet.ibm.com>
CC: David Laight <david.laight@aculab.com>
Fixes: 6a4e812 ("net/mlx4_en: Avoid calling bswap in tx fast path")
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Amir Vadai 2014-12-22 10:21:57 +02:00 • committed by David S. Miller

parent ea3c9e13af

commit 492f5add4b

1 changed files with 11 additions and 1 deletions

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drivers/net/ethernet/mellanox/mlx4/en_tx.c

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