1 files changed, 28 insertions, 4 deletions

diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 8cdfed738fe4..44801d26a37a 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -15,6 +15,7 @@
 
 #include <linux/kref.h>
 #include <linux/mutex.h>
+#include <linux/sysrq.h>
 
 #define SERIAL_TTY_MAJOR        188     /* Nice legal number now */
 #define SERIAL_TTY_MINORS       254     /* loads of devices :) */
@@ -26,6 +27,13 @@
 /* parity check flag */
 #define RELEVANT_IFLAG(iflag)   (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
 
+enum port_dev_state {
+        PORT_UNREGISTERED,
+        PORT_REGISTERING,
+        PORT_REGISTERED,
+        PORT_UNREGISTERING,
+};
+
 /**
  * usb_serial_port: structure for the specific ports of a device.
  * @serial: pointer back to the struct usb_serial owner of this port.
@@ -91,12 +99,17 @@ struct usb_serial_port {
         int                     write_urb_busy;
         __u8                    bulk_out_endpointAddress;
 
+        int                     tx_bytes_flight;
+        int                     urbs_in_flight;
+
         wait_queue_head_t       write_wait;
         struct work_struct      work;
         char                    throttled;
         char                    throttle_req;
         char                    console;
+        unsigned long           sysrq; /* sysrq timeout */
         struct device           dev;
+        enum port_dev_state     dev_state;
 };
 #define to_usb_serial_port(d) container_of(d, struct usb_serial_port, dev)
 
@@ -181,8 +194,10 @@ static inline void usb_set_serial_data(struct usb_serial *serial, void *data)
  *      This will be called when the struct usb_serial structure is fully set
  *      set up.  Do any local initialization of the device, or any private
  *      memory structure allocation at this point in time.
- * @shutdown: pointer to the driver's shutdown function.  This will be
- *      called when the device is removed from the system.
+ * @disconnect: pointer to the driver's disconnect function.  This will be
+ *      called when the device is unplugged or unbound from the driver.
+ * @release: pointer to the driver's release function.  This will be called
+ *      when the usb_serial data structure is about to be destroyed.
  * @usb_driver: pointer to the struct usb_driver that controls this
  *      device.  This is necessary to allow dynamic ids to be added to
  *      the driver from sysfs.
@@ -207,12 +222,14 @@ struct usb_serial_driver {
         struct device_driver    driver;
         struct usb_driver       *usb_driver;
         struct usb_dynids       dynids;
+        int                     max_in_flight_urbs;
 
         int (*probe)(struct usb_serial *serial, const struct usb_device_id *id);
         int (*attach)(struct usb_serial *serial);
         int (*calc_num_ports) (struct usb_serial *serial);
 
-        void (*shutdown)(struct usb_serial *serial);
+        void (*disconnect)(struct usb_serial *serial);
+        void (*release)(struct usb_serial *serial);
 
         int (*port_probe)(struct usb_serial_port *port);
         int (*port_remove)(struct usb_serial_port *port);
@@ -294,9 +311,16 @@ extern void usb_serial_generic_read_bulk_callback(struct urb *urb);
 extern void usb_serial_generic_write_bulk_callback(struct urb *urb);
 extern void usb_serial_generic_throttle(struct tty_struct *tty);
 extern void usb_serial_generic_unthrottle(struct tty_struct *tty);
-extern void usb_serial_generic_shutdown(struct usb_serial *serial);
+extern void usb_serial_generic_disconnect(struct usb_serial *serial);
+extern void usb_serial_generic_release(struct usb_serial *serial);
 extern int usb_serial_generic_register(int debug);
 extern void usb_serial_generic_deregister(void);
+extern void usb_serial_generic_resubmit_read_urb(struct usb_serial_port *port,
+                                                 gfp_t mem_flags);
+extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port,
+                                        unsigned int ch);
+extern int usb_serial_handle_break(struct usb_serial_port *port);
+
 
 extern int usb_serial_bus_register(struct usb_serial_driver *device);
 extern void usb_serial_bus_deregister(struct usb_serial_driver *device);