s390: convert cpu notifier to return encapsulate errno value

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From: Linux Kernel Mailing List
Date: Thursday, May 27, 2010 - 11:00 am

Gitweb:     http://git.kernel.org/linus/d882ba699dbdd2156891290c31c22dc13d6530e4
Commit:     d882ba699dbdd2156891290c31c22dc13d6530e4
Parent:     1dee31f74fed47565ed62023fc65fcb7d6c5d648
Author:     Akinobu Mita <akinobu.mita@gmail.com>
AuthorDate: Wed May 26 14:43:34 2010 -0700
Committer:  Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Thu May 27 09:12:48 2010 -0700

    s390: convert cpu notifier to return encapsulate errno value
    
    By the previous modification, the cpu notifier can return encapsulate
    errno value.  This converts the cpu notifiers for s390.
    
    Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 arch/s390/kernel/smp.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index e4d98de..541053e 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -944,21 +944,21 @@ static int __cpuinit smp_cpu_notify(struct notifier_block *self,
 	struct cpu *c = &per_cpu(cpu_devices, cpu);
 	struct sys_device *s = &c->sysdev;
 	struct s390_idle_data *idle;
+	int err = 0;
 
 	switch (action) {
 	case CPU_ONLINE:
 	case CPU_ONLINE_FROZEN:
 		idle = &per_cpu(s390_idle, cpu);
 		memset(idle, 0, sizeof(struct s390_idle_data));
-		if (sysfs_create_group(&s->kobj, &cpu_online_attr_group))
-			return NOTIFY_BAD;
+		err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
 		break;
 	case CPU_DEAD:
 	case CPU_DEAD_FROZEN:
 		sysfs_remove_group(&s->kobj, &cpu_online_attr_group);
 		break;
 	}
-	return NOTIFY_OK;
+	return notifier_from_errno(err);
 }
 
 static struct notifier_block __cpuinitdata smp_cpu_nb = {
--
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