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(parent: 50c6a34) | patch
SPARC32: Fix over-optimization by GCC near ip_fast_csum.
authorBob Breuer <breuerr@mc.net>
Wed, 14 Feb 2007 08:22:53 +0000 (09:22 +0100)
committerAdrian Bunk <bunk@stusta.de>
Wed, 14 Feb 2007 08:22:53 +0000 (09:22 +0100)
commit4ff61ecf6949e0ab2c062b40e0111f39e3956a0d
tree5f36ea536e4bc844eef73bb76b8aecec14845e28tree | snapshot
parent50c6a34d4daa3a3867128df6f5734fd385b63febcommit | 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>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
include/asm-sparc/checksum.h diff | blob | history
Linux kernel for KaRo TX COM modules