s390/smp: remove redundant check

condition code "status stored" for sigp sense running always implies
that only the "not running" status bit is set. Therefore no need to
check if it is set.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/kernel/smp.c

@@ -158,8 +158,8 @@ static inline int pcpu_running(struct pcpu *pcpu)
 	if (__pcpu_sigp(pcpu->address, sigp_sense_running,
 			0, &pcpu->status) != sigp_status_stored)
 		return 1;
-	/* Check for running status */
-	return !(pcpu->status & 0x400);
+	/* Status stored condition code is equivalent to cpu not running. */
+	return 0;
 }
 
 /*