manual update from upstream:

Applied Al's change 06a544971fad0992fe8b92c5647538d573089dd4
to new location of swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 3 insertions, 23 deletions

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 15e6a8f951f..0d2e101e4f1 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -30,23 +30,6 @@ LIST_HEAD(dpm_off_irq);
 DECLARE_MUTEX(dpm_sem);
 DECLARE_MUTEX(dpm_list_sem);
 
-/*
- * PM Reference Counting.
- */
-
-static inline void device_pm_hold(struct device * dev)
-{
-	if (dev)
-		atomic_inc(&dev->power.pm_users);
-}
-
-static inline void device_pm_release(struct device * dev)
-{
-	if (dev)
-		atomic_dec(&dev->power.pm_users);
-}
-
-
 /**
  *	device_pm_set_parent - Specify power dependency.
  *	@dev:		Device who needs power.
@@ -62,10 +45,8 @@ static inline void device_pm_release(struct device * dev)
 
 void device_pm_set_parent(struct device * dev, struct device * parent)
 {
-	struct device * old_parent = dev->power.pm_parent;
-	device_pm_release(old_parent);
-	dev->power.pm_parent = parent;
-	device_pm_hold(parent);
+	put_device(dev->power.pm_parent);
+	dev->power.pm_parent = get_device(parent);
 }
 EXPORT_SYMBOL_GPL(device_pm_set_parent);
 
@@ -75,7 +56,6 @@ int device_pm_add(struct device * dev)
 
 	pr_debug("PM: Adding info for %s:%s\n",
 		 dev->bus ? dev->bus->name : "No Bus", dev->kobj.name);
-	atomic_set(&dev->power.pm_users, 0);
 	down(&dpm_list_sem);
 	list_add_tail(&dev->power.entry, &dpm_active);
 	device_pm_set_parent(dev, dev->parent);
@@ -91,7 +71,7 @@ void device_pm_remove(struct device * dev)
 		 dev->bus ? dev->bus->name : "No Bus", dev->kobj.name);
 	down(&dpm_list_sem);
 	dpm_sysfs_remove(dev);
-	device_pm_release(dev->power.pm_parent);
+	put_device(dev->power.pm_parent);
 	list_del_init(&dev->power.entry);
 	up(&dpm_list_sem);
 }