parisc: fix ipv6 checksum



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>

parent 6525ee55

arch/parisc/include/asm/checksum.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}