[PATCH 1/6] s390/smp: remove redundant check

[Cornelia Huck <cornelia.huck@de.ibm.com>]

From: Heiko Carstens <heiko.carstens@de.ibm.com>

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: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 arch/s390/kernel/smp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 15cca26..c78074c 100644
--- a/arch/s390/kernel/smp.c
+++ b/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;
 }
 
 /*
-- 
1.7.10.4