1 files changed, 46 insertions, 32 deletions

diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index 257a5e43687..ca2fa5bbe17 100644
--- a/drivers/usb/serial/usb_debug.c
+++ b/drivers/usb/serial/usb_debug.c
@@ -8,26 +8,56 @@
  *	2 as published by the Free Software Foundation.
  */
 
+#include <linux/gfp.h>
 #include <linux/kernel.h>
-#include <linux/init.h>
 #include <linux/tty.h>
 #include <linux/module.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 
-static struct usb_device_id id_table [] = {
+#define USB_DEBUG_MAX_PACKET_SIZE	8
+#define USB_DEBUG_BRK_SIZE		8
+static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = {
+	0x00,
+	0xff,
+	0x01,
+	0xfe,
+	0x00,
+	0xfe,
+	0x01,
+	0xff,
+};
+
+static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x0525, 0x127a) },
 	{ },
 };
 MODULE_DEVICE_TABLE(usb, id_table);
 
-static struct usb_driver debug_driver = {
-	.name =		"debug",
-	.probe =	usb_serial_probe,
-	.disconnect =	usb_serial_disconnect,
-	.id_table =	id_table,
-	.no_dynamic_id = 	1,
-};
+/* This HW really does not support a serial break, so one will be
+ * emulated when ever the break state is set to true.
+ */
+static void usb_debug_break_ctl(struct tty_struct *tty, int break_state)
+{
+	struct usb_serial_port *port = tty->driver_data;
+	if (!break_state)
+		return;
+	usb_serial_generic_write(tty, port, USB_DEBUG_BRK, USB_DEBUG_BRK_SIZE);
+}
+
+static void usb_debug_process_read_urb(struct urb *urb)
+{
+	struct usb_serial_port *port = urb->context;
+
+	if (urb->actual_length == USB_DEBUG_BRK_SIZE &&
+		memcmp(urb->transfer_buffer, USB_DEBUG_BRK,
+						USB_DEBUG_BRK_SIZE) == 0) {
+		usb_serial_handle_break(port);
+		return;
+	}
+
+	usb_serial_generic_process_read_urb(urb);
+}
 
 static struct usb_serial_driver debug_device = {
 	.driver = {
@@ -35,31 +65,15 @@ static struct usb_serial_driver debug_device = {
 		.name =		"debug",
 	},
 	.id_table =		id_table,
-	.num_interrupt_in =	NUM_DONT_CARE,
-	.num_bulk_in =		NUM_DONT_CARE,
-	.num_bulk_out =		NUM_DONT_CARE,
 	.num_ports =		1,
+	.bulk_out_size =	USB_DEBUG_MAX_PACKET_SIZE,
+	.break_ctl =		usb_debug_break_ctl,
+	.process_read_urb =	usb_debug_process_read_urb,
 };
 
-static int __init debug_init(void)
-{
-	int retval;
-
-	retval = usb_serial_register(&debug_device);
-	if (retval)
-		return retval;
-	retval = usb_register(&debug_driver);
-	if (retval)
-		usb_serial_deregister(&debug_device);
-	return retval;
-}
-
-static void __exit debug_exit(void)
-{
-	usb_deregister(&debug_driver);
-	usb_serial_deregister(&debug_device);
-}
+static struct usb_serial_driver * const serial_drivers[] = {
+	&debug_device, NULL
+};
 
-module_init(debug_init);
-module_exit(debug_exit);
+module_usb_serial_driver(serial_drivers, id_table);
 MODULE_LICENSE("GPL");