From: Bob Breuer <breuerr@mc.net>
Date: Fri, 2 Feb 2007 04:24:35 +0000 (-0800)
Subject: [SPARC32]: Fix over-optimization by GCC near ip_fast_csum.
X-Git-Tag: v2.6.20~17^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51bcf092917bfaa88d762879d0bbfe7619e8c16c;p=pandora-kernel.git

[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>
---

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