[DRIVER MODEL] Convert platform drivers to use struct platform_driver

This allows us to eliminate the casts in the drivers, and eventually
remove the use of the device_driver function pointer methods for
platform device drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 39 insertions, 37 deletions

diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c
index 975ace3f5b1e..6b93dbbf3246 100644
--- a/drivers/usb/gadget/dummy_hcd.c
+++ b/drivers/usb/gadget/dummy_hcd.c
@@ -897,7 +897,7 @@ dummy_gadget_release (struct device *dev)
 #endif
 }
 
-static int dummy_udc_probe (struct device *dev)
+static int dummy_udc_probe (struct platform_device *dev)
 {
         struct dummy    *dum = the_controller;
         int             rc;
@@ -910,7 +910,7 @@ static int dummy_udc_probe (struct device *dev)
         dum->gadget.is_otg = (dummy_to_hcd(dum)->self.otg_port != 0);
 
         strcpy (dum->gadget.dev.bus_id, "gadget");
-        dum->gadget.dev.parent = dev;
+        dum->gadget.dev.parent = &dev->dev;
         dum->gadget.dev.release = dummy_gadget_release;
         rc = device_register (&dum->gadget.dev);
         if (rc < 0)
@@ -920,26 +920,26 @@ static int dummy_udc_probe (struct device *dev)
         usb_bus_get (&dummy_to_hcd (dum)->self);
 #endif
 
-        dev_set_drvdata (dev, dum);
+        platform_set_drvdata (dev, dum);
         device_create_file (&dum->gadget.dev, &dev_attr_function);
         return rc;
 }
 
-static int dummy_udc_remove (struct device *dev)
+static int dummy_udc_remove (struct platform_device *dev)
 {
-        struct dummy    *dum = dev_get_drvdata (dev);
+        struct dummy    *dum = platform_get_drvdata (dev);
 
-        dev_set_drvdata (dev, NULL);
+        platform_set_drvdata (dev, NULL);
         device_remove_file (&dum->gadget.dev, &dev_attr_function);
         device_unregister (&dum->gadget.dev);
         return 0;
 }
 
-static int dummy_udc_suspend (struct device *dev, pm_message_t state)
+static int dummy_udc_suspend (struct platform_device *dev, pm_message_t state)
 {
-        struct dummy    *dum = dev_get_drvdata(dev);
+        struct dummy    *dum = platform_get_drvdata(dev);
 
-        dev_dbg (dev, "%s\n", __FUNCTION__);
+        dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
         spin_lock_irq (&dum->lock);
         dum->udc_suspended = 1;
         set_link_state (dum);
@@ -950,29 +950,30 @@ static int dummy_udc_suspend (struct device *dev, pm_message_t state)
         return 0;
 }
 
-static int dummy_udc_resume (struct device *dev)
+static int dummy_udc_resume (struct platform_device *dev)
 {
-        struct dummy    *dum = dev_get_drvdata(dev);
+        struct dummy    *dum = platform_get_drvdata(dev);
 
-        dev_dbg (dev, "%s\n", __FUNCTION__);
+        dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
         spin_lock_irq (&dum->lock);
         dum->udc_suspended = 0;
         set_link_state (dum);
         spin_unlock_irq (&dum->lock);
 
-        dev->power.power_state = PMSG_ON;
+        dev->dev.power.power_state = PMSG_ON;
         usb_hcd_poll_rh_status (dummy_to_hcd (dum));
         return 0;
 }
 
-static struct device_driver dummy_udc_driver = {
-        .name           = (char *) gadget_name,
-        .owner          = THIS_MODULE,
-        .bus            = &platform_bus_type,
+static struct platform_driver dummy_udc_driver = {
         .probe          = dummy_udc_probe,
         .remove         = dummy_udc_remove,
         .suspend        = dummy_udc_suspend,
         .resume         = dummy_udc_resume,
+        .driver         = {
+                .name   = (char *) gadget_name,
+                .owner  = THIS_MODULE,
+        },
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1899,14 +1900,14 @@ static const struct hc_driver dummy_hcd = {
         .bus_resume =           dummy_bus_resume,
 };
 
-static int dummy_hcd_probe (struct device *dev)
+static int dummy_hcd_probe (struct platform_device *dev)
 {
         struct usb_hcd          *hcd;
         int                     retval;
 
         dev_info (dev, "%s, driver " DRIVER_VERSION "\n", driver_desc);
 
-        hcd = usb_create_hcd (&dummy_hcd, dev, dev->bus_id);
+        hcd = usb_create_hcd (&dummy_hcd, &dev->dev, dev->dev.bus_id);
         if (!hcd)
                 return -ENOMEM;
         the_controller = hcd_to_dummy (hcd);
@@ -1919,48 +1920,49 @@ static int dummy_hcd_probe (struct device *dev)
         return retval;
 }
 
-static int dummy_hcd_remove (struct device *dev)
+static int dummy_hcd_remove (struct platform_device *dev)
 {
         struct usb_hcd          *hcd;
 
-        hcd = dev_get_drvdata (dev);
+        hcd = platform_get_drvdata (dev);
         usb_remove_hcd (hcd);
         usb_put_hcd (hcd);
         the_controller = NULL;
         return 0;
 }
 
-static int dummy_hcd_suspend (struct device *dev, pm_message_t state)
+static int dummy_hcd_suspend (struct platform_device *dev, pm_message_t state)
 {
         struct usb_hcd          *hcd;
 
-        dev_dbg (dev, "%s\n", __FUNCTION__);
-        hcd = dev_get_drvdata (dev);
+        dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
+        hcd = platform_get_drvdata (dev);
 
         hcd->state = HC_STATE_SUSPENDED;
         return 0;
 }
 
-static int dummy_hcd_resume (struct device *dev)
+static int dummy_hcd_resume (struct platform_device *dev)
 {
         struct usb_hcd          *hcd;
 
-        dev_dbg (dev, "%s\n", __FUNCTION__);
-        hcd = dev_get_drvdata (dev);
+        dev_dbg (&dev->dev, "%s\n", __FUNCTION__);
+        hcd = platform_get_drvdata (dev);
         hcd->state = HC_STATE_RUNNING;
 
         usb_hcd_poll_rh_status (hcd);
         return 0;
 }
 
-static struct device_driver dummy_hcd_driver = {
-        .name           = (char *) driver_name,
-        .owner          = THIS_MODULE,
-        .bus            = &platform_bus_type,
+static struct platform_driver dummy_hcd_driver = {
         .probe          = dummy_hcd_probe,
         .remove         = dummy_hcd_remove,
         .suspend        = dummy_hcd_suspend,
         .resume         = dummy_hcd_resume,
+        .driver         = {
+                .name   = (char *) driver_name,
+                .owner  = THIS_MODULE,
+        },
 };
 
 /*-------------------------------------------------------------------------*/
@@ -1996,11 +1998,11 @@ static int __init init (void)
         if (usb_disabled ())
                 return -ENODEV;
 
-        retval = driver_register (&dummy_hcd_driver);
+        retval = platform_driver_register (&dummy_hcd_driver);
         if (retval < 0)
                 return retval;
 
-        retval = driver_register (&dummy_udc_driver);
+        retval = platform_driver_register (&dummy_udc_driver);
         if (retval < 0)
                 goto err_register_udc_driver;
 
@@ -2016,9 +2018,9 @@ static int __init init (void)
 err_register_udc:
         platform_device_unregister (&the_hcd_pdev);
 err_register_hcd:
-        driver_unregister (&dummy_udc_driver);
+        platform_driver_unregister (&dummy_udc_driver);
 err_register_udc_driver:
-        driver_unregister (&dummy_hcd_driver);
+        platform_driver_unregister (&dummy_hcd_driver);
         return retval;
 }
 module_init (init);
@@ -2027,7 +2029,7 @@ static void __exit cleanup (void)
 {
         platform_device_unregister (&the_udc_pdev);
         platform_device_unregister (&the_hcd_pdev);
-        driver_unregister (&dummy_udc_driver);
-        driver_unregister (&dummy_hcd_driver);
+        platform_driver_unregister (&dummy_udc_driver);
+        platform_driver_unregister (&dummy_hcd_driver);
 }
 module_exit (cleanup);