[PATCH] s390: fix __delay implementation

Fix __delay implementation.  Called with an argument "1" or "0" it would
loop nearly forever (since (1/2)-1 = 0xffffffff).
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/s390/lib/delay.c

@@ -30,7 +30,7 @@ void __delay(unsigned long loops)
          */
         __asm__ __volatile__(
                 "0: brct %0,0b"
-                : /* no outputs */ : "r" (loops/2) );
+                : /* no outputs */ : "r" ((loops/2) + 1));
 }
 
 /*