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parisc: fix ipv6 checksum

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ipv6 recently started exhibiting the same symptoms as ipv4 was, add
a memory clobber around inline checksum assembly that fribbles memory
to ensure gcc doesn't erroneously cache across it.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
Kyle McMartin 2008-12-08 05:15:51 +00:00
parent 6525ee55bb
commit 5fbf6635a9
1 changed files with 1 additions and 1 deletions
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arch/parisc/include/asm/checksum.h
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@ -182,7 +182,7 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
#endif
: "=r" (sum), "=r" (saddr), "=r" (daddr), "=r" (len)
: "0" (sum), "1" (saddr), "2" (daddr), "3" (len), "r" (proto)
: "r19", "r20", "r21", "r22");
: "r19", "r20", "r21", "r22", "memory");
return csum_fold(sum);
}