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net: Change x86_64 add32_with_carry to allow memory operand

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Note add32_with_carry(a, b) is suboptimal, as it forces
a and b in registers.

b could be a memory or a register operand.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2014-05-02 16:28:40 -07:00 committed by David S. Miller
parent a278534406
commit 4405b4d635
1 changed files with 1 additions and 1 deletions
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2
arch/x86/include/asm/checksum_64.h
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@ -184,7 +184,7 @@ static inline unsigned add32_with_carry(unsigned a, unsigned b)
asm("addl %2,%0\n\t"
"adcl $0,%0"
: "=r" (a)
: "0" (a), "r" (b));
: "0" (a), "rm" (b));
return a;
}