linux/lib/checksum.c, branch mybookliveLinux kernel source treehttps://git.amat.us/linux/atom/lib/checksum.c?h=mybooklive2009-06-19T12:58:13Zlib/checksum.c: fix endianess bug2009-06-19T12:58:13ZArnd Bergmannarnd@arndb.de2009-06-19T08:41:19Zurn:sha1:32a9ff9cc55b42543a84bca90b070df92af72671
The new generic checksum code has a small dependency on endianess and
worked only on big-endian systems. I could not find a nice efficient
way to express this, so I added an #ifdef. Using
'result += le16_to_cpu(*buff);' would have worked as well, but
would be slightly less efficient on big-endian systems and IMHO
would not be clearer.
Also fix a bug that prevents this from working on 64-bit machines.
If you have a 64-bit CPU and want to use the generic checksum
code, you should probably do some more optimizations anyway, but
at least the code should not break.
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
add generic lib/checksum.c2009-06-11T19:02:51ZArnd Bergmannarnd@arndb.de2009-05-13T22:56:38Zurn:sha1:26a28fa4fea5b8c65713aa50c124f76a88c7924d
Add a generic (unoptimized) implementation of checksum.c in pure C
for use by all architectures that cannot be bother with implementing
their own version.
Based on microblaze code by Michal Simek <monstr@monstr.eu>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>