[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, 17 insertions, 18 deletions

diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index e46cc540cf4d..c9e29d808711 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -433,24 +433,22 @@ static const struct hc_driver ohci_omap_hc_driver = {
 
 /*-------------------------------------------------------------------------*/
 
-static int ohci_hcd_omap_drv_probe(struct device *dev)
+static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
 {
-        return usb_hcd_omap_probe(&ohci_omap_hc_driver,
-                                to_platform_device(dev));
+        return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
 }
 
-static int ohci_hcd_omap_drv_remove(struct device *dev)
+static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
 {
-        struct platform_device  *pdev = to_platform_device(dev);
-        struct usb_hcd          *hcd = dev_get_drvdata(dev);
+        struct usb_hcd          *hcd = platform_get_drvdata(dev);
         struct ohci_hcd         *ohci = hcd_to_ohci (hcd);
 
-        usb_hcd_omap_remove(hcd, pdev);
+        usb_hcd_omap_remove(hcd, dev);
         if (ohci->transceiver) {
                 (void) otg_set_host(ohci->transceiver, 0);
                 put_device(ohci->transceiver->dev);
         }
-        dev_set_drvdata(dev, NULL);
+        platform_set_drvdata(dev, NULL);
 
         return 0;
 }
@@ -459,9 +457,9 @@ static int ohci_hcd_omap_drv_remove(struct device *dev)
 
 #ifdef  CONFIG_PM
 
-static int ohci_omap_suspend(struct device *dev, pm_message_t message)
+static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
 {
-        struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
+        struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
 
         if (time_before(jiffies, ohci->next_statechange))
                 msleep(5);
@@ -473,9 +471,9 @@ static int ohci_omap_suspend(struct device *dev, pm_message_t message)
         return 0;
 }
 
-static int ohci_omap_resume(struct device *dev)
+static int ohci_omap_resume(struct platform_device *dev)
 {
-        struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
+        struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
 
         if (time_before(jiffies, ohci->next_statechange))
                 msleep(5);
@@ -494,16 +492,17 @@ static int ohci_omap_resume(struct device *dev)
 /*
  * Driver definition to register with the OMAP bus
  */
-static struct device_driver ohci_hcd_omap_driver = {
-        .name           = "ohci",
-        .owner          = THIS_MODULE,
-        .bus            = &platform_bus_type,
+static struct platform_driver ohci_hcd_omap_driver = {
         .probe          = ohci_hcd_omap_drv_probe,
         .remove         = ohci_hcd_omap_drv_remove,
 #ifdef  CONFIG_PM
         .suspend        = ohci_omap_suspend,
         .resume         = ohci_omap_resume,
 #endif
+        .driver         = {
+                .owner  = THIS_MODULE,
+                .name   = "ohci",
+        },
 };
 
 static int __init ohci_hcd_omap_init (void)
@@ -515,12 +514,12 @@ static int __init ohci_hcd_omap_init (void)
         pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
                 sizeof (struct ed), sizeof (struct td));
 
-        return driver_register(&ohci_hcd_omap_driver);
+        return platform_driver_register(&ohci_hcd_omap_driver);
 }
 
 static void __exit ohci_hcd_omap_cleanup (void)
 {
-        driver_unregister(&ohci_hcd_omap_driver);
+        platform_driver_unregister(&ohci_hcd_omap_driver);
 }
 
 module_init (ohci_hcd_omap_init);