parport: daisy: use new parport device model

Modify parport daisy driver to use the new parallel port device model.

Signed-off-by: Sudip Mukherjee <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/parport/daisy.c

···
 struct pardevice *parport_open(int devnum, const char *name)
 {
 	struct daisydev *p = topology;
+	struct pardev_cb par_cb;
 	struct parport *port;
 	struct pardevice *dev;
 	int daisy;
 
+	memset(&par_cb, 0, sizeof(par_cb));
 	spin_lock(&topology_lock);
 	while (p && p->devnum != devnum)
 		p = p->next;
···
 	port = parport_get_port(p->port);
 	spin_unlock(&topology_lock);
 
-	dev = parport_register_device(port, name, NULL, NULL, NULL, 0, NULL);
+	dev = parport_register_dev_model(port, name, &par_cb, devnum);
 	parport_put_port(port);
 	if (!dev)
 		return NULL;
···
 
 	kfree(deviceid);
 	return detected;
+}
+
+static int daisy_drv_probe(struct pardevice *par_dev)
+{
+	struct device_driver *drv = par_dev->dev.driver;
+
+	if (strcmp(drv->name, "daisy_drv"))
+		return -ENODEV;
+	if (strcmp(par_dev->name, daisy_dev_name))
+		return -ENODEV;
+
+	return 0;
+}
+
+static struct parport_driver daisy_driver = {
+	.name = "daisy_drv",
+	.probe = daisy_drv_probe,
+	.devmodel = true,
+};
+
+int daisy_drv_init(void)
+{
+	return parport_register_driver(&daisy_driver);
+}
+
+void daisy_drv_exit(void)
+{
+	parport_unregister_driver(&daisy_driver);
 }

drivers/parport/probe.c

···
 ssize_t parport_device_id (int devnum, char *buffer, size_t count)
 {
 	ssize_t retval = -ENXIO;
-	struct pardevice *dev = parport_open (devnum, "Device ID probe");
+	struct pardevice *dev = parport_open(devnum, daisy_dev_name);
 	if (!dev)
 		return -ENXIO;
 

drivers/parport/share.c

···
 
 int parport_bus_init(void)
 {
-	return bus_register(&parport_bus_type);
+	int retval;
+
+	retval = bus_register(&parport_bus_type);
+	if (retval)
+		return retval;
+	daisy_drv_init();
+
+	return 0;
 }
 
 void parport_bus_exit(void)
 {
+	daisy_drv_exit();
 	bus_unregister(&parport_bus_type);
 }
 

include/linux/parport.h

···
 					      void *, size_t, int);
 
 /* IEEE1284.3 functions */
+#define daisy_dev_name "Device ID probe"
 extern int parport_daisy_init (struct parport *port);
 extern void parport_daisy_fini (struct parport *port);
 extern struct pardevice *parport_open (int devnum, const char *name);
···
 extern ssize_t parport_device_id (int devnum, char *buffer, size_t len);
 extern void parport_daisy_deselect_all (struct parport *port);
 extern int parport_daisy_select (struct parport *port, int daisy, int mode);
+
+#ifdef CONFIG_PARPORT_1284
+extern int daisy_drv_init(void);
+extern void daisy_drv_exit(void);
+#else
+static inline int daisy_drv_init(void)
+{
+	return 0;
+}
+
+static inline void daisy_drv_exit(void) {}
+#endif
 
 /* Lowlevel drivers _can_ call this support function to handle irqs.  */
 static inline void parport_generic_irq(struct parport *port)