acpi/pmstat.c: refer to the array after range check.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>

diff --git a/xen/drivers/acpi/pmstat.c b/xen/drivers/acpi/pmstat.c
index 78ad809686e93209eedc7dc28477570d394bb6c4..b3ba34c378bc84cf64fdbe653074cfed442a3911 100644 (file)
--- a/xen/drivers/acpi/pmstat.c
+++ b/xen/drivers/acpi/pmstat.c
@@ -50,10 +50,11 @@ extern int pmstat_reset_cx_stat(uint32_t cpuid);
 int do_get_pm_info(struct xen_sysctl_get_pmstat *op)
 {
     int ret = 0;
-    const struct processor_pminfo *pmpt = processor_pminfo[op->cpuid];
+    const struct processor_pminfo *pmpt;
 
     if ( (op->cpuid >= NR_CPUS) || !cpu_online(op->cpuid) )
         return -EINVAL;
+    pmpt = processor_pminfo[op->cpuid];
 
     switch ( op->type & PMSTAT_CATEGORY_MASK )
     {