From d1716a60a8ea90788d24aa22d7eec83fbdd2d88a Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Wed, 30 Sep 2009 16:19:39 -0700 Subject: x86: Fix csum_ipv6_magic asm memory clobber Just like ip_fast_csum, the assembly snippet in csum_ipv6_magic needs a memory clobber, as it is only passed the address of the buffer, not a memory reference to the buffer itself. This caused failures in Hurd's pfinetv4 when we tried to compile it with gcc-4.3 (bogus checksums). Signed-off-by: Samuel Thibault Acked-by: David S. Miller Cc: Andi Kleen Cc: Signed-off-by: Andrew Morton Signed-off-by: H. Peter Anvin Signed-off-by: Ingo Molnar --- arch/x86/include/asm/checksum_32.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h index 7c5ef8b14d9..46fc474fd81 100644 --- a/arch/x86/include/asm/checksum_32.h +++ b/arch/x86/include/asm/checksum_32.h @@ -161,7 +161,8 @@ static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr, "adcl $0, %0 ;\n" : "=&r" (sum) : "r" (saddr), "r" (daddr), - "r" (htonl(len)), "r" (htonl(proto)), "0" (sum)); + "r" (htonl(len)), "r" (htonl(proto)), "0" (sum) + : "memory"); return csum_fold(sum); } -- cgit v1.2.3