usb: gadget: s3c2410: convert to udc_start/udc_stop

Mechanical change making use of the new (can we
still call it new ?) interface for registering
UDC drivers.

Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/s3c2410_udc.c

@@ -1538,9 +1538,10 @@ static int s3c2410_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
 	return -ENOTSUPP;
 }
 
-static int s3c2410_udc_start(struct usb_gadget_driver *driver,
-		int (*bind)(struct usb_gadget *, struct usb_gadget_driver *));
-static int s3c2410_udc_stop(struct usb_gadget_driver *driver);
+static int s3c2410_udc_start(struct usb_gadget *g,
+		struct usb_gadget_driver *driver);
+static int s3c2410_udc_stop(struct usb_gadget *g,
+		struct usb_gadget_driver *driver);
 
 static const struct usb_gadget_ops s3c2410_ops = {
 	.get_frame		= s3c2410_udc_get_frame,
@@ -1549,8 +1550,8 @@ static const struct usb_gadget_ops s3c2410_ops = {
 	.pullup			= s3c2410_udc_pullup,
 	.vbus_session		= s3c2410_udc_vbus_session,
 	.vbus_draw		= s3c2410_vbus_draw,
-	.start			= s3c2410_udc_start,
-	.stop			= s3c2410_udc_stop,
+	.udc_start		= s3c2410_udc_start,
+	.udc_stop		= s3c2410_udc_stop,
 };
 
 static void s3c2410_udc_command(enum s3c2410_udc_cmd_e cmd)
@@ -1664,33 +1665,14 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev)
 	s3c2410_udc_command(S3C2410_UDC_P_ENABLE);
 }
 
-static int s3c2410_udc_start(struct usb_gadget_driver *driver,
-		int (*bind)(struct usb_gadget *, struct usb_gadget_driver *))
+static int s3c2410_udc_start(struct usb_gadget *g,
+		struct usb_gadget_driver *driver)
 {
-	struct s3c2410_udc *udc = the_controller;
+	struct s3c2410_udc *udc = to_s3c2410(g)
 	int		retval;
 
 	dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name);
 
-	/* Sanity checks */
-	if (!udc)
-		return -ENODEV;
-
-	if (udc->driver)
-		return -EBUSY;
-
-	if (!bind || !driver->setup || driver->max_speed < USB_SPEED_FULL) {
-		dev_err(&udc->gadget.dev, "Invalid driver: bind %p setup %p speed %d\n",
-			bind, driver->setup, driver->max_speed);
-		return -EINVAL;
-	}
-#if defined(MODULE)
-	if (!driver->unbind) {
-		dev_err(&udc->gadget.dev, "Invalid driver: no unbind method\n");
-		return -EINVAL;
-	}
-#endif
-
 	/* Hook the driver */
 	udc->driver = driver;
 	udc->gadget.dev.driver = &driver->driver;
@@ -1702,15 +1684,6 @@ static int s3c2410_udc_start(struct usb_gadget_driver *driver,
 		goto register_error;
 	}
 
-	dprintk(DEBUG_NORMAL, "binding gadget driver '%s'\n",
-		driver->driver.name);
-
-	retval = bind(&udc->gadget, driver);
-	if (retval) {
-		device_del(&udc->gadget.dev);
-		goto register_error;
-	}
-
 	/* Enable udc */
 	s3c2410_udc_enable(udc);
 
@@ -1722,24 +1695,10 @@ register_error:
 	return retval;
 }
 
-static int s3c2410_udc_stop(struct usb_gadget_driver *driver)
+static int s3c2410_udc_stop(struct usb_gadget *g,
+		struct usb_gadget_driver *driver)
 {
-	struct s3c2410_udc *udc = the_controller;
-
-	if (!udc)
-		return -ENODEV;
-
-	if (!driver || driver != udc->driver || !driver->unbind)
-		return -EINVAL;
-
-	dprintk(DEBUG_NORMAL, "usb_gadget_unregister_driver() '%s'\n",
-		driver->driver.name);
-
-	/* report disconnect */
-	if (driver->disconnect)
-		driver->disconnect(&udc->gadget);
-
-	driver->unbind(&udc->gadget);
+	struct s3c2410_udc *udc = to_s3c2410(g);
 
 	device_del(&udc->gadget.dev);
 	udc->driver = NULL;

drivers/usb/gadget/s3c2410_udc.h

@@ -95,5 +95,6 @@ struct s3c2410_udc {
 	u8				vbus;
 	struct dentry			*regs_info;
 };
+#define to_s3c2410(g)	(container_of((g), struct s3c2410_udc, gadget))
 
 #endif