From a1d9207003cc304ebdf8f34c1567ff811dcd284b Mon Sep 17 00:00:00 2001
From: Ming Lei <ming.lei@canonical.com>
Date: Fri, 17 Aug 2012 22:06:59 +0800
Subject: [PATCH] --- yaml --- r: 324384 b: refs/heads/master c:
 dfe3212e0196c01402154971841463d721dea915 h: refs/heads/master v: v3

---
 [refs]                          |  2 +-
 trunk/drivers/base/power/main.c | 22 ++++++++++++++++++++++
 trunk/include/linux/pm.h        |  5 +++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index f7f97b067d60..f77a1bfc4cce 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c08f67730aba342b03f070209acc2990d3decf3c
+refs/heads/master: dfe3212e0196c01402154971841463d721dea915
diff --git a/trunk/drivers/base/power/main.c b/trunk/drivers/base/power/main.c
index 0113adc310dc..b0b072a88f5f 100644
--- a/trunk/drivers/base/power/main.c
+++ b/trunk/drivers/base/power/main.c
@@ -1324,3 +1324,25 @@ int device_pm_wait_for_dev(struct device *subordinate, struct device *dev)
 	return async_error;
 }
 EXPORT_SYMBOL_GPL(device_pm_wait_for_dev);
+
+/**
+ * dpm_for_each_dev - device iterator.
+ * @data: data for the callback.
+ * @fn: function to be called for each device.
+ *
+ * Iterate over devices in dpm_list, and call @fn for each device,
+ * passing it @data.
+ */
+void dpm_for_each_dev(void *data, void (*fn)(struct device *, void *))
+{
+	struct device *dev;
+
+	if (!fn)
+		return;
+
+	device_pm_lock();
+	list_for_each_entry(dev, &dpm_list, power.entry)
+		fn(dev, data);
+	device_pm_unlock();
+}
+EXPORT_SYMBOL_GPL(dpm_for_each_dev);
diff --git a/trunk/include/linux/pm.h b/trunk/include/linux/pm.h
index f067e60a3832..88f034a23f2c 100644
--- a/trunk/include/linux/pm.h
+++ b/trunk/include/linux/pm.h
@@ -638,6 +638,7 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
 	} while (0)
 
 extern int device_pm_wait_for_dev(struct device *sub, struct device *dev);
+extern void dpm_for_each_dev(void *data, void (*fn)(struct device *, void *));
 
 extern int pm_generic_prepare(struct device *dev);
 extern int pm_generic_suspend_late(struct device *dev);
@@ -677,6 +678,10 @@ static inline int device_pm_wait_for_dev(struct device *a, struct device *b)
 	return 0;
 }
 
+static inline void dpm_for_each_dev(void *data, void (*fn)(struct device *, void *))
+{
+}
+
 #define pm_generic_prepare	NULL
 #define pm_generic_suspend	NULL
 #define pm_generic_resume	NULL