From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 23 Jun 2009 19:37:26 +0000 (+0200)
Subject: lib/checksum.c: make do_csum optional
X-Git-Tag: v2.6.33-rc1~301^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20c1f641bb80fb272dec959a5caabed92e5a422e;p=pandora-kernel.git

lib/checksum.c: make do_csum optional

Mike Frysinger suggested that do_csum should be optional
so that an architecture can use the generic checksum code
but still provide an optimized fast-path for the most
critical function.

This can mean an implementation using inline assembly,
or in case of Alpha one using 64-bit arithmetic in C.

Cc: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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