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Commit e374d17c authored by Kyle McMartin's avatar Kyle McMartin
Browse files

parisc: fix miscompilation of ip_fast_csum with gcc >= 4.3 



ip_fast_csum needs an asm "memory" clobber, otherwise the aggressive
optimizations in gcc-4.3 cause it to be miscompiled.

Signed-off-by: default avatarKyle McMartin <kyle@mcmartin.ca>
parent f4441b62

include/asm-parisc/checksum.h

+1 −1
Original line number Original line Diff line number Diff line
@@ -65,7 +65,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) 
"2:\n"

"2:\n"

	: "=r" (sum), "=r" (iph), "=r" (ihl)

	: "=r" (sum), "=r" (iph), "=r" (ihl)

	: "1" (iph), "2" (ihl)

	: "1" (iph), "2" (ihl)

	: "r19", "r20", "r21" );

	: "r19", "r20", "r21", "memory");





	return (__force __sum16)sum;

	return (__force __sum16)sum;

}

}