[PATCH] [60/66] x86_64: Initialize powernow_data[] for all siblings

["Andi Kleen" <ak@xxxxxxx>]

I got an oops on a dual core system because the lost tick handler
called cpufreq_get() on core 1 and powernow tried to follow
a NULL powernow_data[] pointer there.

Initialize powernow_data for all cores of a CPU. 

Cc: jacob.shin@xxxxxxx
Cc: davej@xxxxxxxxxx

Signed-off-by: Andi Kleen <ak@xxxxxxx>

---
 arch/i386/kernel/cpu/cpufreq/powernow-k8.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

Index: linux/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
===================================================================
--- linux.orig/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ linux/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -54,7 +54,7 @@ static DECLARE_MUTEX(fidvid_sem);
 static struct powernow_k8_data *powernow_data[NR_CPUS];
 
 #ifndef CONFIG_SMP
-static cpumask_t cpu_core_map[1];
+static cpumask_t cpu_core_map[1] = { CPU_MASK_ALL };
 #endif
 
 /* Return a frequency in MHz, given an input fid */
@@ -977,7 +977,7 @@ static int __cpuinit powernowk8_cpu_init
 {
 	struct powernow_k8_data *data;
 	cpumask_t oldmask = CPU_MASK_ALL;
-	int rc;
+	int rc, i;
 
 	if (!cpu_online(pol->cpu))
 		return -ENODEV;
@@ -1063,7 +1063,8 @@ static int __cpuinit powernowk8_cpu_init
 	printk("cpu_init done, current fid 0x%x, vid 0x%x\n",
 	       data->currfid, data->currvid);
 
-	powernow_data[pol->cpu] = data;
+	for_each_cpu_mask(i, cpu_core_map[pol->cpu])
+		powernow_data[i] = data;
 
 	return 0;
 
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