PNP: convert PNP driver bus legacy pm_ops to dev_pm_ops

Convert drivers/pnp/driver.c bus legacy pm_ops to dev_pm_ops using
existing suspend and resume routines.  Add freeze interface to
handle PM_EVENT_FREEZE correctly with dev_pm_ops.  pm_op() looks for
freeze interface when the event is PM_EVENT_FREEZE.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 18 insertions, 3 deletions

diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
index 00e94032531a..12adb43a0693 100644
--- a/drivers/pnp/driver.c
+++ b/drivers/pnp/driver.c
@@ -154,7 +154,7 @@ static int pnp_bus_match(struct device *dev, struct device_driver *drv)
         return 1;
 }
 
-static int pnp_bus_suspend(struct device *dev, pm_message_t state)
+static int __pnp_bus_suspend(struct device *dev, pm_message_t state)
 {
         struct pnp_dev *pnp_dev = to_pnp_dev(dev);
         struct pnp_driver *pnp_drv = pnp_dev->driver;
@@ -180,6 +180,16 @@ static int pnp_bus_suspend(struct device *dev, pm_message_t state)
         return 0;
 }
 
+static int pnp_bus_suspend(struct device *dev)
+{
+        return __pnp_bus_suspend(dev, PMSG_SUSPEND);
+}
+
+static int pnp_bus_freeze(struct device *dev)
+{
+        return __pnp_bus_suspend(dev, PMSG_FREEZE);
+}
+
 static int pnp_bus_resume(struct device *dev)
 {
         struct pnp_dev *pnp_dev = to_pnp_dev(dev);
@@ -210,14 +220,19 @@ static int pnp_bus_resume(struct device *dev)
         return 0;
 }
 
+static const struct dev_pm_ops pnp_bus_dev_pm_ops = {
+        .suspend = pnp_bus_suspend,
+        .freeze = pnp_bus_freeze,
+        .resume = pnp_bus_resume,
+};
+
 struct bus_type pnp_bus_type = {
         .name    = "pnp",
         .match   = pnp_bus_match,
         .probe   = pnp_device_probe,
         .remove  = pnp_device_remove,
         .shutdown = pnp_device_shutdown,
-        .suspend = pnp_bus_suspend,
-        .resume  = pnp_bus_resume,
+        .pm      = &pnp_bus_dev_pm_ops,
         .dev_attrs = pnp_interface_attrs,
 };