arm: fix atomic_{add,sub}_return

Now, this code doesn't pass this simple test:

        atomic_t a;;
        int c = 0;
        atomic_set(&a, c);
        c = atomic_inc(&a);
        if (c != 0) {
                pr_err("c = %x &a = %p\n", c, &a);
                return 1;
        }

08:28:51.771: 26187: ERR: fd.c:36: c = 7ef47a60 &a = 0x7ef47a60

Reported-by: Mr Jenkins
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>

test/zdtm/lib/arch/arm/include/asm/atomic.h

@@ -25,8 +25,8 @@ static inline unsigned int atomic_add_return(int i, atomic_t *v)
 "	strex	%1, %0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b\n"
-	: "=&r" (result), "=&r" (tmp), "+Qo" (v)
-        : "r" (&v), "Ir" (i)
+	: "=&r" (result), "=&r" (tmp), "+Qo" (*v)
+        : "r" (v), "Ir" (i)
 	: "cc");
 
 	smp_mb();
@@ -47,8 +47,8 @@ static inline unsigned int atomic_sub_return(int i, atomic_t *v)
 "	strex	%1, %0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b\n"
-	: "=&r" (result), "=&r" (tmp), "+Qo" (v)
-	: "r" (&v), "Ir" (i)
+	: "=&r" (result), "=&r" (tmp), "+Qo" (*v)
+	: "r" (v), "Ir" (i)
 	: "cc");
 
 	smp_mb();