1 files changed, 27 insertions, 11 deletions

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 23a63207d747..a9163d02983a 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -693,8 +693,8 @@ static int cpufreq_remove_dev (struct sys_device * sys_dev)
 	unsigned int cpu = sys_dev->id;
 	unsigned long flags;
 	struct cpufreq_policy *data;
-	struct sys_device *cpu_sys_dev;
 #ifdef CONFIG_SMP
+	struct sys_device *cpu_sys_dev;
 	unsigned int j;
 #endif
 
@@ -823,6 +823,30 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne
 
 
 /** 
+ * cpufreq_quick_get - get the CPU frequency (in kHz) frpm policy->cur
+ * @cpu: CPU number
+ *
+ * This is the last known freq, without actually getting it from the driver.
+ * Return value will be same as what is shown in scaling_cur_freq in sysfs.
+ */
+unsigned int cpufreq_quick_get(unsigned int cpu)
+{
+	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+	unsigned int ret = 0;
+
+	if (policy) {
+		down(&policy->lock);
+		ret = policy->cur;
+		up(&policy->lock);
+		cpufreq_cpu_put(policy);
+	}
+
+	return (ret);
+}
+EXPORT_SYMBOL(cpufreq_quick_get);
+
+
+/** 
  * cpufreq_get - get the current CPU frequency (in kHz)
  * @cpu: CPU number
  *
@@ -1113,21 +1137,13 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy,
 {
 	int retval = -EINVAL;
 
-	/*
-	 * If we are already in context of hotplug thread, we dont need to
-	 * acquire the hotplug lock. Otherwise acquire cpucontrol to prevent
-	 * hotplug from removing this cpu that we are working on.
-	 */
-	if (!current_in_cpu_hotplug())
-		lock_cpu_hotplug();
-
+	lock_cpu_hotplug();
 	dprintk("target for CPU %u: %u kHz, relation %u\n", policy->cpu,
 		target_freq, relation);
 	if (cpu_online(policy->cpu) && cpufreq_driver->target)
 		retval = cpufreq_driver->target(policy, target_freq, relation);
 
-	if (!current_in_cpu_hotplug())
-		unlock_cpu_hotplug();
+	unlock_cpu_hotplug();
 
 	return retval;
 }