From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 2 Feb 2012 21:21:15 +0000 (+0000)
Subject: sfc: Replace some literal constants with EFX_PAGE_SIZE/EFX_BUF_SIZE
X-Git-Tag: v3.4-rc1~177^2~270^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b6262d0ccf759a16fabe11d904a2531125a4b71;p=pandora-kernel.git

sfc: Replace some literal constants with EFX_PAGE_SIZE/EFX_BUF_SIZE

The 'page size' for PCIe DMA, i.e. the alignment of boundaries at
which DMA must be broken, is 4KB.  Name this value as EFX_PAGE_SIZE
and use it in efx_max_tx_len().  Redefine EFX_BUF_SIZE as
EFX_PAGE_SIZE since its value is also a result of that requirement,
and use it in efx_init_special_buffer().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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