PM / OPP rename 'head' as 'rcu_head' or 'srcu_head' based on its type

Both 'struct dev_pm_opp' and 'struct device_opp' have member with name 'head'
but with different types. This leads to confusion while reading the code.

Name them 'rcu_head' and 'srcu_head'.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 10 insertions, 10 deletions

diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index 89ced955fafa..76ae6fd28345 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -53,7 +53,7 @@
  * @rate:       Frequency in hertz
  * @u_volt:     Nominal voltage in microvolts corresponding to this OPP
  * @dev_opp:    points back to the device_opp struct this opp belongs to
- * @head:       RCU callback head used for deferred freeing
+ * @rcu_head:   RCU callback head used for deferred freeing
  *
  * This structure stores the OPP information for a given device.
  */
@@ -65,7 +65,7 @@ struct dev_pm_opp {
         unsigned long u_volt;
 
         struct device_opp *dev_opp;
-        struct rcu_head head;
+        struct rcu_head rcu_head;
 };
 
 /**
@@ -76,7 +76,7 @@ struct dev_pm_opp {
  *              RCU usage: nodes are not modified in the list of device_opp,
  *              however addition is possible and is secured by dev_opp_list_lock
  * @dev:        device pointer
- * @head:       notifier head to notify the OPP availability changes.
+ * @srcu_head:  notifier head to notify the OPP availability changes.
  * @opp_list:   list of opps
  *
  * This is an internal data structure maintaining the link to opps attached to
@@ -87,7 +87,7 @@ struct device_opp {
         struct list_head node;
 
         struct device *dev;
-        struct srcu_notifier_head head;
+        struct srcu_notifier_head srcu_head;
         struct list_head opp_list;
 };
 
@@ -436,7 +436,7 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
                 }
 
                 dev_opp->dev = dev;
-                srcu_init_notifier_head(&dev_opp->head);
+                srcu_init_notifier_head(&dev_opp->srcu_head);
                 INIT_LIST_HEAD(&dev_opp->opp_list);
 
                 /* Secure the device list modification */
@@ -481,7 +481,7 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
          * Notify the changes in the availability of the operable
          * frequency/voltage list.
          */
-        srcu_notifier_call_chain(&dev_opp->head, OPP_EVENT_ADD, new_opp);
+        srcu_notifier_call_chain(&dev_opp->srcu_head, OPP_EVENT_ADD, new_opp);
         return 0;
 }
 EXPORT_SYMBOL_GPL(dev_pm_opp_add);
@@ -557,14 +557,14 @@ static int opp_set_availability(struct device *dev, unsigned long freq,
 
         list_replace_rcu(&opp->node, &new_opp->node);
         mutex_unlock(&dev_opp_list_lock);
-        kfree_rcu(opp, head);
+        kfree_rcu(opp, rcu_head);
 
         /* Notify the change of the OPP availability */
         if (availability_req)
-                srcu_notifier_call_chain(&dev_opp->head, OPP_EVENT_ENABLE,
+                srcu_notifier_call_chain(&dev_opp->srcu_head, OPP_EVENT_ENABLE,
                                          new_opp);
         else
-                srcu_notifier_call_chain(&dev_opp->head, OPP_EVENT_DISABLE,
+                srcu_notifier_call_chain(&dev_opp->srcu_head, OPP_EVENT_DISABLE,
                                          new_opp);
 
         return 0;
@@ -629,7 +629,7 @@ struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev)
         if (IS_ERR(dev_opp))
                 return ERR_CAST(dev_opp); /* matching type */
 
-        return &dev_opp->head;
+        return &dev_opp->srcu_head;
 }
 
 #ifdef CONFIG_OF