From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 26 Jun 2012 14:06:36 +0000 (+0200)
Subject: s390/smp: remove redundant check
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9d04edd23e6ab368d25ca0adde6f1676185d49f8;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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: 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>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 15cca26ccb6c..c78074c6cc1d 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;
 }
 
 /*