[PATCH] m32r: Fix cpu_possible_map and cpu_present_map initialization for SMP kernel

This patch fixes a boot problem of the m32r SMP kernel 2.6.16-rc1-mm3 or
later.

In this patch, cpu_possible_map is statically initialized, and cpu_present_map
is also copied from cpu_possible_map in smp_prepare_cpus(), because the m32r
architecture has not supported CPU hotplug yet.

Signed-off-by: Hayato Fujiwara <fujiwara.hayato@renesas.com>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 7 deletions

diff --git a/arch/m32r/kernel/setup.c b/arch/m32r/kernel/setup.c
index 0d78942b4c76..3cd3c2988a48 100644
--- a/arch/m32r/kernel/setup.c
+++ b/arch/m32r/kernel/setup.c
@@ -9,6 +9,7 @@
 
 #include <linux/config.h>
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/stddef.h>
 #include <linux/fs.h>
 #include <linux/sched.h>
@@ -219,8 +220,6 @@ static unsigned long __init setup_memory(void)
 extern unsigned long setup_memory(void);
 #endif  /* CONFIG_DISCONTIGMEM */
 
-#define M32R_PCC_PCATCR 0x00ef7014      /* will move to m32r.h */
-
 void __init setup_arch(char **cmdline_p)
 {
         ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
@@ -269,15 +268,14 @@ void __init setup_arch(char **cmdline_p)
         paging_init();
 }
 
-static struct cpu cpu[NR_CPUS];
+static struct cpu cpu_devices[NR_CPUS];
 
 static int __init topology_init(void)
 {
-        int cpu_id;
+        int i;
 
-        for (cpu_id = 0; cpu_id < NR_CPUS; cpu_id++)
-                if (cpu_possible(cpu_id))
-                        register_cpu(&cpu[cpu_id], cpu_id, NULL);
+        for_each_present_cpu(i)
+                register_cpu(&cpu_devices[i], i, NULL);
 
         return 0;
 }