[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, 16 insertions, 15 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 98820603e75f..3742753241ee 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2381,9 +2381,9 @@ void serial8250_resume_port(int line)
  * list is terminated with a zero flags entry, which means we expect
  * all entries to have at least UPF_BOOT_AUTOCONF set.
  */
-static int __devinit serial8250_probe(struct device *dev)
+static int __devinit serial8250_probe(struct platform_device *dev)
 {
-        struct plat_serial8250_port *p = dev->platform_data;
+        struct plat_serial8250_port *p = dev->dev.platform_data;
         struct uart_port port;
         int ret, i;
 
@@ -2399,12 +2399,12 @@ static int __devinit serial8250_probe(struct device *dev)
                 port.flags      = p->flags;
                 port.mapbase    = p->mapbase;
                 port.hub6       = p->hub6;
-                port.dev        = dev;
+                port.dev        = &dev->dev;
                 if (share_irqs)
                         port.flags |= UPF_SHARE_IRQ;
                 ret = serial8250_register_port(&port);
                 if (ret < 0) {
-                        dev_err(dev, "unable to register port at index %d "
+                        dev_err(&dev->dev, "unable to register port at index %d "
                                 "(IO%lx MEM%lx IRQ%d): %d\n", i,
                                 p->iobase, p->mapbase, p->irq, ret);
                 }
@@ -2415,54 +2415,55 @@ static int __devinit serial8250_probe(struct device *dev)
 /*
  * Remove serial ports registered against a platform device.
  */
-static int __devexit serial8250_remove(struct device *dev)
+static int __devexit serial8250_remove(struct platform_device *dev)
 {
         int i;
 
         for (i = 0; i < UART_NR; i++) {
                 struct uart_8250_port *up = &serial8250_ports[i];
 
-                if (up->port.dev == dev)
+                if (up->port.dev == &dev->dev)
                         serial8250_unregister_port(i);
         }
         return 0;
 }
 
-static int serial8250_suspend(struct device *dev, pm_message_t state)
+static int serial8250_suspend(struct platform_device *dev, pm_message_t state)
 {
         int i;
 
         for (i = 0; i < UART_NR; i++) {
                 struct uart_8250_port *up = &serial8250_ports[i];
 
-                if (up->port.type != PORT_UNKNOWN && up->port.dev == dev)
+                if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
                         uart_suspend_port(&serial8250_reg, &up->port);
         }
 
         return 0;
 }
 
-static int serial8250_resume(struct device *dev)
+static int serial8250_resume(struct platform_device *dev)
 {
         int i;
 
         for (i = 0; i < UART_NR; i++) {
                 struct uart_8250_port *up = &serial8250_ports[i];
 
-                if (up->port.type != PORT_UNKNOWN && up->port.dev == dev)
+                if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev)
                         uart_resume_port(&serial8250_reg, &up->port);
         }
 
         return 0;
 }
 
-static struct device_driver serial8250_isa_driver = {
-        .name           = "serial8250",
-        .bus            = &platform_bus_type,
+static struct platform_driver serial8250_isa_driver = {
         .probe          = serial8250_probe,
         .remove         = __devexit_p(serial8250_remove),
         .suspend        = serial8250_suspend,
         .resume         = serial8250_resume,
+        .driver         = {
+                .name   = "serial8250",
+        },
 };
 
 /*
@@ -2608,7 +2609,7 @@ static int __init serial8250_init(void)
 
         serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev);
 
-        ret = driver_register(&serial8250_isa_driver);
+        ret = platform_driver_register(&serial8250_isa_driver);
         if (ret == 0)
                 goto out;
 
@@ -2630,7 +2631,7 @@ static void __exit serial8250_exit(void)
          */
         serial8250_isa_devs = NULL;
 
-        driver_unregister(&serial8250_isa_driver);
+        platform_driver_unregister(&serial8250_isa_driver);
         platform_device_unregister(isa_dev);
 
         uart_unregister_driver(&serial8250_reg);