1 files changed, 9 insertions, 4 deletions

diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 0ec50ba62139..ce911ebf91e8 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -59,6 +59,7 @@ enum port_dev_state {
  * @bulk_out_buffer: pointer to the bulk out buffer for this port.
  * @bulk_out_size: the size of the bulk_out_buffer, in bytes.
  * @write_urb: pointer to the bulk out struct urb for this port.
+ * @write_fifo: kfifo used to buffer outgoing data
  * @write_urb_busy: port`s writing status
  * @bulk_out_endpointAddress: endpoint address for the bulk out pipe for this
  *      port.
@@ -96,6 +97,7 @@ struct usb_serial_port {
         unsigned char           *bulk_out_buffer;
         int                     bulk_out_size;
         struct urb              *write_urb;
+        struct kfifo            *write_fifo;
         int                     write_urb_busy;
         __u8                    bulk_out_endpointAddress;
 
@@ -148,6 +150,7 @@ struct usb_serial {
         struct usb_interface            *interface;
         unsigned char                   disconnected:1;
         unsigned char                   suspending:1;
+        unsigned char                   attached:1;
         unsigned char                   minor;
         unsigned char                   num_ports;
         unsigned char                   num_port_pointers;
@@ -238,9 +241,8 @@ struct usb_serial_driver {
         int (*resume)(struct usb_serial *serial);
 
         /* serial function calls */
-        /* Called by console with tty = NULL and by tty */
-        int  (*open)(struct tty_struct *tty,
-                        struct usb_serial_port *port, struct file *filp);
+        /* Called by console and by the tty layer */
+        int  (*open)(struct tty_struct *tty, struct usb_serial_port *port);
         void (*close)(struct usb_serial_port *port);
         int  (*write)(struct tty_struct *tty, struct usb_serial_port *port,
                         const unsigned char *buf, int count);
@@ -261,6 +263,9 @@ struct usb_serial_driver {
            be an attached tty at this point */
         void (*dtr_rts)(struct usb_serial_port *port, int on);
         int  (*carrier_raised)(struct usb_serial_port *port);
+        /* Called by the usb serial hooks to allow the user to rework the
+           termios state */
+        void (*init_termios)(struct tty_struct *tty);
         /* USB events */
         void (*read_int_callback)(struct urb *urb);
         void (*write_int_callback)(struct urb *urb);
@@ -300,7 +305,7 @@ static inline void usb_serial_console_disconnect(struct usb_serial *serial) {}
 extern struct usb_serial *usb_serial_get_by_index(unsigned int minor);
 extern void usb_serial_put(struct usb_serial *serial);
 extern int usb_serial_generic_open(struct tty_struct *tty,
-                struct usb_serial_port *port, struct file *filp);
+        struct usb_serial_port *port);
 extern int usb_serial_generic_write(struct tty_struct *tty,
         struct usb_serial_port *port, const unsigned char *buf, int count);
 extern void usb_serial_generic_close(struct usb_serial_port *port);