From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 9 Jan 2007 09:18:44 +0000 (+0100)
Subject: [S390] Fix cpu hotplug (missing 'online' attribute).
X-Git-Tag: v2.6.20-rc5~36^2~3
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6721f77810dfcb7cbf8e97be6fa43fe2740dd0aa;p=linux-2.6

[S390] Fix cpu hotplug (missing 'online' attribute).

72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc inverts the logic if an
'online' attribute in /sys/devices/system/cpu/cpuX should appear.
So we end up with no hotpluggable cpus at all...
Set the hotpluggable value to one to make sure the online
attribute appears again.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 19090f7d4f..c0cd255fdd 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -794,7 +794,10 @@ static int __init topology_init(void)
 	int ret;
 
 	for_each_possible_cpu(cpu) {
-		ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu);
+		struct cpu *c = &per_cpu(cpu_devices, cpu);
+
+		c->hotpluggable = 1;
+		ret = register_cpu(c, cpu);
 		if (ret)
 			printk(KERN_WARNING "topology_init: register_cpu %d "
 			       "failed (%d)\n", cpu, ret);