x86-32: Fix atomic64_inc_not_zero return value convention

atomic64_inc_not_zero must return 1 if it perfomed the add and 0 otherwise.
It was doing the opposite thing.
Signed-off-by: NLuca Barbieri <luca@luca-barbieri.com>
LKML-Reference: <1267469749-11878-6-git-send-email-luca@luca-barbieri.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

arch/x86/lib/atomic64_386_32.S

@@ -153,13 +153,12 @@ BEGIN inc_not_zero %esi
 	adcl $0, %edx
 	movl %eax,  ($v)
 	movl %edx, 4($v)
-	xorl %eax, %eax
+	movl $1, %eax
 2:
 RETURN
 3:
 	testl %edx, %edx
 	jne 1b
-	movl $1, %eax
 	jmp 2b
 END_
 

arch/x86/lib/atomic64_cx8_32.S

@@ -212,14 +212,13 @@ ENTRY(atomic64_inc_not_zero_cx8)
 	cmpxchg8b (%esi)
 	jne 1b
 
-	xorl %eax, %eax
+	movl $1, %eax
 3:
 	RESTORE ebx
 	ret
 4:
 	testl %edx, %edx
 	jne 2b
-	movl $1, %eax
 	jmp 3b
 	CFI_ENDPROC
 ENDPROC(atomic64_inc_not_zero_cx8)