From: Kyle McMartin <kyle@mcmartin.ca>
Date: Thu, 18 Oct 2007 07:03:50 +0000 (-0700)
Subject: [PARISC] Unbreak processor_probe when we have more than NR_CPUS
X-Git-Tag: v2.6.24-rc1~118^2~20
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=f8b9e5945738d25c04d6735c2a070f574d2b34c5;p=linux-block.git

[PARISC] Unbreak processor_probe when we have more than NR_CPUS

If we already have NR_CPUS worth of cpus online, we obviously shouldn't
be trying to bring up more... Fixes a particularly vexing issue I had when
running another machines kernel on my rp3440.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
---

diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 549f5484342c..370086fb8333 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -82,7 +82,12 @@ static int __cpuinit processor_probe(struct parisc_device *dev)
 	unsigned long cpuid;
 	struct cpuinfo_parisc *p;
 
-#ifndef CONFIG_SMP
+#ifdef CONFIG_SMP
+	if (num_online_cpus() >= NR_CPUS) {
+		printk(KERN_INFO "num_online_cpus() >= NR_CPUS\n");
+		return 1;
+	}
+#else
 	if (boot_cpu_data.cpu_count > 0) {
 		printk(KERN_INFO "CONFIG_SMP=n  ignoring additional CPUs\n");
 		return 1;