USB: serial: whiteheat: simplify endpoint check

Simplify the endpoint sanity check by letting core verify that the
required endpoints are present.

Note that the driver registers four ports but uses five bulk-endpoint
pairs.
Signed-off-by: Johan Hovold <johan@kernel.org>

drivers/usb/serial/whiteheat.c

@@ -80,8 +80,6 @@ static int  whiteheat_firmware_download(struct usb_serial *serial,
 static int  whiteheat_firmware_attach(struct usb_serial *serial);
 
 /* function prototypes for the Connect Tech WhiteHEAT serial converter */
-static int whiteheat_probe(struct usb_serial *serial,
-				const struct usb_device_id *id);
 static int  whiteheat_attach(struct usb_serial *serial);
 static void whiteheat_release(struct usb_serial *serial);
 static int  whiteheat_port_probe(struct usb_serial_port *port);
@@ -118,7 +116,8 @@ static struct usb_serial_driver whiteheat_device = {
 	.description =		"Connect Tech - WhiteHEAT",
 	.id_table =		id_table_std,
 	.num_ports =		4,
-	.probe =		whiteheat_probe,
+	.num_bulk_in =		5,
+	.num_bulk_out =		5,
 	.attach =		whiteheat_attach,
 	.release =		whiteheat_release,
 	.port_probe =		whiteheat_port_probe,
@@ -221,33 +220,6 @@ static int whiteheat_firmware_attach(struct usb_serial *serial)
  * Connect Tech's White Heat serial driver functions
  *****************************************************************************/
 
-static int whiteheat_probe(struct usb_serial *serial,
-				const struct usb_device_id *id)
-{
-	struct usb_host_interface *iface_desc;
-	struct usb_endpoint_descriptor *endpoint;
-	size_t num_bulk_in = 0;
-	size_t num_bulk_out = 0;
-	size_t min_num_bulk;
-	unsigned int i;
-
-	iface_desc = serial->interface->cur_altsetting;
-
-	for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
-		endpoint = &iface_desc->endpoint[i].desc;
-		if (usb_endpoint_is_bulk_in(endpoint))
-			++num_bulk_in;
-		if (usb_endpoint_is_bulk_out(endpoint))
-			++num_bulk_out;
-	}
-
-	min_num_bulk = COMMAND_PORT + 1;
-	if (num_bulk_in < min_num_bulk || num_bulk_out < min_num_bulk)
-		return -ENODEV;
-
-	return 0;
-}
-
 static int whiteheat_attach(struct usb_serial *serial)
 {
 	struct usb_serial_port *command_port;