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(parent: a36cfba) | patch
[SPARC32]: Fix over-optimization by GCC near ip_fast_csum.
authorBob Breuer <breuerr@mc.net>
Fri, 2 Feb 2007 04:24:35 +0000 (20:24 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 2 Feb 2007 04:24:35 +0000 (20:24 -0800)
commit2ff82ba851d7a66c47307473b3cdd7731832cfeb
tree637ebcb8992b5358d142b8400fce25f5f82f0bcctree | snapshot
parenta36cfba918c1b274eb20633fc3b004f962a7c9d2commit | diff
[SPARC32]: Fix over-optimization by GCC near ip_fast_csum.

In some cases such as:
iph->check = 0;
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
GCC may optimize out the previous store.

Observed as a failure of NFS over udp (bad checksums on ip fragments)
when compiled with GCC 3.4.2.

Signed-off-by: Bob Breuer <breuerr@mc.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/asm-sparc/checksum.h diff | blob | history
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