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microblaze: Add topology init 

Init topology subsystem by cpu registration.

Microblaze Linux kernel is fauling by
"Oops: kernel access of bad area, sig: 11"
because cpu is not initialized.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2012-01-10 12:15:58 +01:00
parent e343a895a9
commit d761f0c521
1 changed files with 20 additions and 1 deletions
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21
arch/microblaze/kernel/setup.c
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@ -26,6 +26,7 @@
#include <linux/cache.h> #include <linux/cache.h>
#include <linux/of_platform.h> #include <linux/of_platform.h>
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/cpu.h>
#include <asm/cacheflush.h> #include <asm/cacheflush.h>
#include <asm/entry.h> #include <asm/entry.h>
#include <asm/cpuinfo.h> #include <asm/cpuinfo.h>
@ -226,5 +227,23 @@ static int __init setup_bus_notifier(void)
return 0; return 0;
} }
arch_initcall(setup_bus_notifier); arch_initcall(setup_bus_notifier);
static DEFINE_PER_CPU(struct cpu, cpu_devices);
static int __init topology_init(void)
{
int i, ret;
for_each_present_cpu(i) {
struct cpu *c = &per_cpu(cpu_devices, i);
ret = register_cpu(c, i);
if (ret)
printk(KERN_WARNING "topology_init: register_cpu %d "
"failed (%d)\n", i, ret);
}
return 0;
}
subsys_initcall(topology_init);