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yaml --- r: 349081 b: refs/heads/master c: bcb2754 h: refs/heads/master i: 349079: cb9b777 v: v3
git-mirror · Jan 22, 2013 · 59d911a · 59d911a
1 parent cc6548c
commit 59d911a
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 78e8eb8feab7d85f4cc215afe1457a228bf4eed9
+refs/heads/master: bcb27549f4185ca7d0168e201931613706ef2b83
diff --git a/trunk/drivers/devfreq/devfreq.c b/trunk/drivers/devfreq/devfreq.c
@@ -994,6 +994,11 @@ module_exit(devfreq_exit);
  * @freq:	The frequency given to target function
  * @flags:	Flags handed from devfreq framework.
  *
+ * Locking: This function must be called under rcu_read_lock(). opp is a rcu
+ * protected pointer. The reason for the same is that the opp pointer which is
+ * returned will remain valid for use with opp_get_{voltage, freq} only while
+ * under the locked area. The pointer returned must be used prior to unlocking
+ * with rcu_read_unlock() to maintain the integrity of the pointer.
  */
 struct opp *devfreq_recommended_opp(struct device *dev, unsigned long *freq,
 				    u32 flags)