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    Subject[18/20] USB: usb-serial: replace shutdown with disconnect, release
    2.6.27-stable review patch.  If anyone has any objections, please let us know.

    ------------------
    This is commit f9c99bb8b3a1ec81af68d484a551307326c2e933 back-ported to
    2.6.27.39.
    This patch (as1254-2) splits up the shutdown method of usb_serial_driver
    into a disconnect and a release method.

    The problem is that the usb-serial core was calling shutdown during
    disconnect handling, but drivers didn't expect it to be called until
    after all the open file references had been closed. The result was an
    oops when the close method tried to use memory that had been
    deallocated by shutdown.

    Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
    Tested-by: Rory Filer <rfiler@SierraWireless.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/usb/serial/aircable.c | 5 +--
    drivers/usb/serial/belkin_sa.c | 7 ++--
    drivers/usb/serial/cp2101.c | 6 ++--
    drivers/usb/serial/cyberjack.c | 20 ++++++++++----
    drivers/usb/serial/cypress_m8.c | 11 +++----
    drivers/usb/serial/digi_acceleport.c | 20 ++++++++++----
    drivers/usb/serial/empeg.c | 8 -----
    drivers/usb/serial/ftdi_sio.c | 14 ---------
    drivers/usb/serial/garmin_gps.c | 16 +++++++++--
    drivers/usb/serial/generic.c | 9 ++++--
    drivers/usb/serial/io_edgeport.c | 29 ++++++++++++++------
    drivers/usb/serial/io_tables.h | 12 +++++---
    drivers/usb/serial/io_ti.c | 22 ++++++++++++---
    drivers/usb/serial/ipaq.c | 7 ----
    drivers/usb/serial/iuu_phoenix.c | 6 ++--
    drivers/usb/serial/keyspan.c | 13 ++++++++-
    drivers/usb/serial/keyspan.h | 12 +++++---
    drivers/usb/serial/keyspan_pda.c | 4 +-
    drivers/usb/serial/kl5kusb105.c | 39 +++++++++++++++------------
    drivers/usb/serial/kobil_sct.c | 12 ++------
    drivers/usb/serial/mct_u232.c | 13 +++------
    drivers/usb/serial/mos7720.c | 9 ++----
    drivers/usb/serial/mos7840.c | 48 ++++++++++++++++++++++++++++------
    drivers/usb/serial/omninet.c | 19 ++++++++++---
    drivers/usb/serial/option.c | 17 ++++++++----
    drivers/usb/serial/oti6858.c | 7 ++--
    drivers/usb/serial/pl2303.c | 5 +--
    drivers/usb/serial/sierra.c | 28 +++++++++++++++++--
    drivers/usb/serial/spcp8x5.c | 5 +--
    drivers/usb/serial/ti_usb_3410_5052.c | 10 ++-----
    drivers/usb/serial/usb-serial.c | 29 +++++++++-----------
    drivers/usb/serial/visor.c | 13 +++------
    drivers/usb/serial/whiteheat.c | 6 ++--
    include/linux/usb/serial.h | 12 +++++---
    34 files changed, 298 insertions(+), 195 deletions(-)
    --- a/drivers/usb/serial/aircable.c
    +++ b/drivers/usb/serial/aircable.c
    @@ -362,7 +362,7 @@ static int aircable_attach(struct usb_se
    return 0;
    }

    -static void aircable_shutdown(struct usb_serial *serial)
    +static void aircable_release(struct usb_serial *serial)
    {

    struct usb_serial_port *port = serial->port[0];
    @@ -373,7 +373,6 @@ static void aircable_shutdown(struct usb
    if (priv) {
    serial_buf_free(priv->tx_buf);
    serial_buf_free(priv->rx_buf);
    - usb_set_serial_port_data(port, NULL);
    kfree(priv);
    }
    }
    @@ -598,7 +597,7 @@ static struct usb_serial_driver aircable
    .num_ports = 1,
    .attach = aircable_attach,
    .probe = aircable_probe,
    - .shutdown = aircable_shutdown,
    + .release = aircable_release,
    .write = aircable_write,
    .write_room = aircable_write_room,
    .write_bulk_callback = aircable_write_bulk_callback,
    --- a/drivers/usb/serial/belkin_sa.c
    +++ b/drivers/usb/serial/belkin_sa.c
    @@ -90,7 +90,7 @@ static int debug;

    /* function prototypes for a Belkin USB Serial Adapter F5U103 */
    static int belkin_sa_startup(struct usb_serial *serial);
    -static void belkin_sa_shutdown(struct usb_serial *serial);
    +static void belkin_sa_release(struct usb_serial *serial);
    static int belkin_sa_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void belkin_sa_close(struct tty_struct *tty,
    @@ -143,7 +143,7 @@ static struct usb_serial_driver belkin_d
    .tiocmget = belkin_sa_tiocmget,
    .tiocmset = belkin_sa_tiocmset,
    .attach = belkin_sa_startup,
    - .shutdown = belkin_sa_shutdown,
    + .release = belkin_sa_release,
    };


    @@ -198,14 +198,13 @@ static int belkin_sa_startup(struct usb_
    }


    -static void belkin_sa_shutdown(struct usb_serial *serial)
    +static void belkin_sa_release(struct usb_serial *serial)
    {
    struct belkin_sa_private *priv;
    int i;

    dbg("%s", __func__);

    - /* stop reads and writes on all ports */
    for (i = 0; i < serial->num_ports; ++i) {
    /* My special items, the standard routines free my urbs */
    priv = usb_get_serial_port_data(serial->port[i]);
    --- a/drivers/usb/serial/cp2101.c
    +++ b/drivers/usb/serial/cp2101.c
    @@ -50,7 +50,7 @@ static int cp2101_tiocmset(struct tty_st
    unsigned int, unsigned int);
    static void cp2101_break_ctl(struct tty_struct *, int);
    static int cp2101_startup(struct usb_serial *);
    -static void cp2101_shutdown(struct usb_serial *);
    +static void cp2101_disconnect(struct usb_serial *);


    static int debug;
    @@ -125,7 +125,7 @@ static struct usb_serial_driver cp2101_d
    .tiocmget = cp2101_tiocmget,
    .tiocmset = cp2101_tiocmset,
    .attach = cp2101_startup,
    - .shutdown = cp2101_shutdown,
    + .disconnect = cp2101_disconnect,
    };

    /* Config request types */
    @@ -727,7 +727,7 @@ static int cp2101_startup(struct usb_ser
    return 0;
    }

    -static void cp2101_shutdown(struct usb_serial *serial)
    +static void cp2101_disconnect(struct usb_serial *serial)
    {
    int i;

    --- a/drivers/usb/serial/cyberjack.c
    +++ b/drivers/usb/serial/cyberjack.c
    @@ -58,7 +58,8 @@ static int debug;

    /* Function prototypes */
    static int cyberjack_startup(struct usb_serial *serial);
    -static void cyberjack_shutdown(struct usb_serial *serial);
    +static void cyberjack_disconnect(struct usb_serial *serial);
    +static void cyberjack_release(struct usb_serial *serial);
    static int cyberjack_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void cyberjack_close(struct tty_struct *tty,
    @@ -95,7 +96,8 @@ static struct usb_serial_driver cyberjac
    .id_table = id_table,
    .num_ports = 1,
    .attach = cyberjack_startup,
    - .shutdown = cyberjack_shutdown,
    + .disconnect = cyberjack_disconnect,
    + .release = cyberjack_release,
    .open = cyberjack_open,
    .close = cyberjack_close,
    .write = cyberjack_write,
    @@ -148,17 +150,25 @@ static int cyberjack_startup(struct usb_
    return 0;
    }

    -static void cyberjack_shutdown(struct usb_serial *serial)
    +static void cyberjack_disconnect(struct usb_serial *serial)
    {
    int i;

    dbg("%s", __func__);

    - for (i = 0; i < serial->num_ports; ++i) {
    + for (i = 0; i < serial->num_ports; ++i)
    usb_kill_urb(serial->port[i]->interrupt_in_urb);
    +}
    +
    +static void cyberjack_release(struct usb_serial *serial)
    +{
    + int i;
    +
    + dbg("%s", __func__);
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    /* My special items, the standard routines free my urbs */
    kfree(usb_get_serial_port_data(serial->port[i]));
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    }

    --- a/drivers/usb/serial/cypress_m8.c
    +++ b/drivers/usb/serial/cypress_m8.c
    @@ -171,7 +171,7 @@ struct cypress_buf {
    static int cypress_earthmate_startup(struct usb_serial *serial);
    static int cypress_hidcom_startup(struct usb_serial *serial);
    static int cypress_ca42v2_startup(struct usb_serial *serial);
    -static void cypress_shutdown(struct usb_serial *serial);
    +static void cypress_release(struct usb_serial *serial);
    static int cypress_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void cypress_close(struct tty_struct *tty,
    @@ -215,7 +215,7 @@ static struct usb_serial_driver cypress_
    .id_table = id_table_earthmate,
    .num_ports = 1,
    .attach = cypress_earthmate_startup,
    - .shutdown = cypress_shutdown,
    + .release = cypress_release,
    .open = cypress_open,
    .close = cypress_close,
    .write = cypress_write,
    @@ -241,7 +241,7 @@ static struct usb_serial_driver cypress_
    .id_table = id_table_cyphidcomrs232,
    .num_ports = 1,
    .attach = cypress_hidcom_startup,
    - .shutdown = cypress_shutdown,
    + .release = cypress_release,
    .open = cypress_open,
    .close = cypress_close,
    .write = cypress_write,
    @@ -267,7 +267,7 @@ static struct usb_serial_driver cypress_
    .id_table = id_table_nokiaca42v2,
    .num_ports = 1,
    .attach = cypress_ca42v2_startup,
    - .shutdown = cypress_shutdown,
    + .release = cypress_release,
    .open = cypress_open,
    .close = cypress_close,
    .write = cypress_write,
    @@ -612,7 +612,7 @@ static int cypress_ca42v2_startup(struct
    } /* cypress_ca42v2_startup */


    -static void cypress_shutdown(struct usb_serial *serial)
    +static void cypress_release(struct usb_serial *serial)
    {
    struct cypress_private *priv;

    @@ -625,7 +625,6 @@ static void cypress_shutdown(struct usb_
    if (priv) {
    cypress_buf_free(priv->buf);
    kfree(priv);
    - usb_set_serial_port_data(serial->port[0], NULL);
    }
    }

    --- a/drivers/usb/serial/digi_acceleport.c
    +++ b/drivers/usb/serial/digi_acceleport.c
    @@ -460,7 +460,8 @@ static void digi_close(struct tty_struct
    struct file *filp);
    static int digi_startup_device(struct usb_serial *serial);
    static int digi_startup(struct usb_serial *serial);
    -static void digi_shutdown(struct usb_serial *serial);
    +static void digi_disconnect(struct usb_serial *serial);
    +static void digi_release(struct usb_serial *serial);
    static void digi_read_bulk_callback(struct urb *urb);
    static int digi_read_inb_callback(struct urb *urb);
    static int digi_read_oob_callback(struct urb *urb);
    @@ -522,7 +523,8 @@ static struct usb_serial_driver digi_acc
    .tiocmget = digi_tiocmget,
    .tiocmset = digi_tiocmset,
    .attach = digi_startup,
    - .shutdown = digi_shutdown,
    + .disconnect = digi_disconnect,
    + .release = digi_release,
    };

    static struct usb_serial_driver digi_acceleport_4_device = {
    @@ -548,7 +550,8 @@ static struct usb_serial_driver digi_acc
    .tiocmget = digi_tiocmget,
    .tiocmset = digi_tiocmset,
    .attach = digi_startup,
    - .shutdown = digi_shutdown,
    + .disconnect = digi_disconnect,
    + .release = digi_release,
    };


    @@ -1586,16 +1589,23 @@ static int digi_startup(struct usb_seria
    }


    -static void digi_shutdown(struct usb_serial *serial)
    +static void digi_disconnect(struct usb_serial *serial)
    {
    int i;
    - dbg("digi_shutdown: TOP, in_interrupt()=%ld", in_interrupt());
    + dbg("digi_disconnect: TOP, in_interrupt()=%ld", in_interrupt());

    /* stop reads and writes on all ports */
    for (i = 0; i < serial->type->num_ports + 1; i++) {
    usb_kill_urb(serial->port[i]->read_urb);
    usb_kill_urb(serial->port[i]->write_urb);
    }
    +}
    +
    +
    +static void digi_release(struct usb_serial *serial)
    +{
    + int i;
    + dbg("digi_release: TOP, in_interrupt()=%ld", in_interrupt());

    /* free the private data structures for all ports */
    /* number of regular ports + 1 for the out-of-band port */
    --- a/drivers/usb/serial/empeg.c
    +++ b/drivers/usb/serial/empeg.c
    @@ -92,7 +92,6 @@ static int empeg_chars_in_buffer(struct
    static void empeg_throttle(struct tty_struct *tty);
    static void empeg_unthrottle(struct tty_struct *tty);
    static int empeg_startup(struct usb_serial *serial);
    -static void empeg_shutdown(struct usb_serial *serial);
    static void empeg_set_termios(struct tty_struct *tty,
    struct usb_serial_port *port, struct ktermios *old_termios);
    static void empeg_write_bulk_callback(struct urb *urb);
    @@ -126,7 +125,6 @@ static struct usb_serial_driver empeg_de
    .throttle = empeg_throttle,
    .unthrottle = empeg_unthrottle,
    .attach = empeg_startup,
    - .shutdown = empeg_shutdown,
    .set_termios = empeg_set_termios,
    .write = empeg_write,
    .write_room = empeg_write_room,
    @@ -429,12 +427,6 @@ static int empeg_startup(struct usb_ser
    }


    -static void empeg_shutdown(struct usb_serial *serial)
    -{
    - dbg("%s", __func__);
    -}
    -
    -
    static void empeg_set_termios(struct tty_struct *tty,
    struct usb_serial_port *port, struct ktermios *old_termios)
    {
    --- a/drivers/usb/serial/ftdi_sio.c
    +++ b/drivers/usb/serial/ftdi_sio.c
    @@ -708,7 +708,6 @@ static const char *ftdi_chip_name[] = {
    /* function prototypes for a FTDI serial converter */
    static int ftdi_sio_probe(struct usb_serial *serial,
    const struct usb_device_id *id);
    -static void ftdi_shutdown(struct usb_serial *serial);
    static int ftdi_sio_port_probe(struct usb_serial_port *port);
    static int ftdi_sio_port_remove(struct usb_serial_port *port);
    static int ftdi_open(struct tty_struct *tty,
    @@ -764,7 +763,6 @@ static struct usb_serial_driver ftdi_sio
    .ioctl = ftdi_ioctl,
    .set_termios = ftdi_set_termios,
    .break_ctl = ftdi_break_ctl,
    - .shutdown = ftdi_shutdown,
    };


    @@ -1442,18 +1440,6 @@ static int ftdi_mtxorb_hack_setup(struct
    return 0;
    }

    -/* ftdi_shutdown is called from usbserial:usb_serial_disconnect
    - * it is called when the usb device is disconnected
    - *
    - * usbserial:usb_serial_disconnect
    - * calls __serial_close for each open of the port
    - * shutdown is called then (ie ftdi_shutdown)
    - */
    -static void ftdi_shutdown(struct usb_serial *serial)
    -{
    - dbg("%s", __func__);
    -}
    -
    static int ftdi_sio_port_remove(struct usb_serial_port *port)
    {
    struct ftdi_private *priv = usb_get_serial_port_data(port);
    --- a/drivers/usb/serial/garmin_gps.c
    +++ b/drivers/usb/serial/garmin_gps.c
    @@ -1527,7 +1527,7 @@ static int garmin_attach(struct usb_seri
    }


    -static void garmin_shutdown(struct usb_serial *serial)
    +static void garmin_disconnect(struct usb_serial *serial)
    {
    struct usb_serial_port *port = serial->port[0];
    struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
    @@ -1536,8 +1536,17 @@ static void garmin_shutdown(struct usb_s

    usb_kill_urb(port->interrupt_in_urb);
    del_timer_sync(&garmin_data_p->timer);
    +}
    +
    +
    +static void garmin_release(struct usb_serial *serial)
    +{
    + struct usb_serial_port *port = serial->port[0];
    + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port);
    +
    + dbg("%s", __func__);
    +
    kfree(garmin_data_p);
    - usb_set_serial_port_data(port, NULL);
    }


    @@ -1556,7 +1565,8 @@ static struct usb_serial_driver garmin_d
    .throttle = garmin_throttle,
    .unthrottle = garmin_unthrottle,
    .attach = garmin_attach,
    - .shutdown = garmin_shutdown,
    + .disconnect = garmin_disconnect,
    + .release = garmin_release,
    .write = garmin_write,
    .write_room = garmin_write_room,
    .write_bulk_callback = garmin_write_bulk_callback,
    --- a/drivers/usb/serial/generic.c
    +++ b/drivers/usb/serial/generic.c
    @@ -63,7 +63,8 @@ struct usb_serial_driver usb_serial_gene
    .id_table = generic_device_ids,
    .usb_driver = &generic_driver,
    .num_ports = 1,
    - .shutdown = usb_serial_generic_shutdown,
    + .disconnect = usb_serial_generic_disconnect,
    + .release = usb_serial_generic_release,
    .throttle = usb_serial_generic_throttle,
    .unthrottle = usb_serial_generic_unthrottle,
    .resume = usb_serial_generic_resume,
    @@ -419,7 +420,7 @@ void usb_serial_generic_unthrottle(struc
    }
    }

    -void usb_serial_generic_shutdown(struct usb_serial *serial)
    +void usb_serial_generic_disconnect(struct usb_serial *serial)
    {
    int i;

    @@ -430,3 +431,7 @@ void usb_serial_generic_shutdown(struct
    generic_cleanup(serial->port[i]);
    }

    +void usb_serial_generic_release(struct usb_serial *serial)
    +{
    + dbg("%s", __func__);
    +}
    --- a/drivers/usb/serial/io_edgeport.c
    +++ b/drivers/usb/serial/io_edgeport.c
    @@ -225,7 +225,8 @@ static int edge_tiocmget(struct tty_str
    static int edge_tiocmset(struct tty_struct *tty, struct file *file,
    unsigned int set, unsigned int clear);
    static int edge_startup(struct usb_serial *serial);
    -static void edge_shutdown(struct usb_serial *serial);
    +static void edge_disconnect(struct usb_serial *serial);
    +static void edge_release(struct usb_serial *serial);

    #include "io_tables.h" /* all of the devices that this driver supports */

    @@ -3178,21 +3179,16 @@ static int edge_startup(struct usb_seria


    /****************************************************************************
    - * edge_shutdown
    + * edge_disconnect
    * This function is called whenever the device is removed from the usb bus.
    ****************************************************************************/
    -static void edge_shutdown(struct usb_serial *serial)
    +static void edge_disconnect(struct usb_serial *serial)
    {
    struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
    - int i;

    dbg("%s", __func__);

    /* stop reads and writes on all ports */
    - for (i = 0; i < serial->num_ports; ++i) {
    - kfree(usb_get_serial_port_data(serial->port[i]));
    - usb_set_serial_port_data(serial->port[i], NULL);
    - }
    /* free up our endpoint stuff */
    if (edge_serial->is_epic) {
    usb_kill_urb(edge_serial->interrupt_read_urb);
    @@ -3203,9 +3199,24 @@ static void edge_shutdown(struct usb_ser
    usb_free_urb(edge_serial->read_urb);
    kfree(edge_serial->bulk_in_buffer);
    }
    +}
    +
    +
    +/****************************************************************************
    + * edge_release
    + * This function is called when the device structure is deallocated.
    + ****************************************************************************/
    +static void edge_release(struct usb_serial *serial)
    +{
    + struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
    + int i;
    +
    + dbg("%s", __func__);
    +
    + for (i = 0; i < serial->num_ports; ++i)
    + kfree(usb_get_serial_port_data(serial->port[i]));

    kfree(edge_serial);
    - usb_set_serial_data(serial, NULL);
    }


    --- a/drivers/usb/serial/io_tables.h
    +++ b/drivers/usb/serial/io_tables.h
    @@ -117,7 +117,8 @@ static struct usb_serial_driver edgeport
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    .tiocmget = edge_tiocmget,
    @@ -145,7 +146,8 @@ static struct usb_serial_driver edgeport
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    .tiocmget = edge_tiocmget,
    @@ -173,7 +175,8 @@ static struct usb_serial_driver edgeport
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    .tiocmget = edge_tiocmget,
    @@ -200,7 +203,8 @@ static struct usb_serial_driver epic_dev
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    .tiocmget = edge_tiocmget,
    --- a/drivers/usb/serial/io_ti.c
    +++ b/drivers/usb/serial/io_ti.c
    @@ -2652,7 +2652,7 @@ cleanup:
    return -ENOMEM;
    }

    -static void edge_shutdown(struct usb_serial *serial)
    +static void edge_disconnect(struct usb_serial *serial)
    {
    int i;
    struct edgeport_port *edge_port;
    @@ -2662,12 +2662,22 @@ static void edge_shutdown(struct usb_ser
    for (i = 0; i < serial->num_ports; ++i) {
    edge_port = usb_get_serial_port_data(serial->port[i]);
    edge_remove_sysfs_attrs(edge_port->port);
    + }
    +}
    +
    +static void edge_release(struct usb_serial *serial)
    +{
    + int i;
    + struct edgeport_port *edge_port;
    +
    + dbg("%s", __func__);
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    + edge_port = usb_get_serial_port_data(serial->port[i]);
    edge_buf_free(edge_port->ep_out_buf);
    kfree(edge_port);
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    kfree(usb_get_serial_data(serial));
    - usb_set_serial_data(serial, NULL);
    }


    @@ -2904,7 +2914,8 @@ static struct usb_serial_driver edgeport
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .port_probe = edge_create_sysfs_attrs,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    @@ -2933,7 +2944,8 @@ static struct usb_serial_driver edgeport
    .throttle = edge_throttle,
    .unthrottle = edge_unthrottle,
    .attach = edge_startup,
    - .shutdown = edge_shutdown,
    + .disconnect = edge_disconnect,
    + .release = edge_release,
    .port_probe = edge_create_sysfs_attrs,
    .ioctl = edge_ioctl,
    .set_termios = edge_set_termios,
    --- a/drivers/usb/serial/ipaq.c
    +++ b/drivers/usb/serial/ipaq.c
    @@ -79,7 +79,6 @@ static int ipaq_open(struct tty_struct
    static void ipaq_close(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static int ipaq_startup(struct usb_serial *serial);
    -static void ipaq_shutdown(struct usb_serial *serial);
    static int ipaq_write(struct tty_struct *tty, struct usb_serial_port *port,
    const unsigned char *buf, int count);
    static int ipaq_write_bulk(struct usb_serial_port *port,
    @@ -581,7 +580,6 @@ static struct usb_serial_driver ipaq_dev
    .open = ipaq_open,
    .close = ipaq_close,
    .attach = ipaq_startup,
    - .shutdown = ipaq_shutdown,
    .write = ipaq_write,
    .write_room = ipaq_write_room,
    .chars_in_buffer = ipaq_chars_in_buffer,
    @@ -957,11 +955,6 @@ static int ipaq_startup(struct usb_seria
    return usb_reset_configuration(serial->dev);
    }

    -static void ipaq_shutdown(struct usb_serial *serial)
    -{
    - dbg("%s", __func__);
    -}
    -
    static int __init ipaq_init(void)
    {
    int retval;
    --- a/drivers/usb/serial/iuu_phoenix.c
    +++ b/drivers/usb/serial/iuu_phoenix.c
    @@ -122,8 +122,8 @@ static int iuu_startup(struct usb_serial
    return 0;
    }

    -/* Shutdown function */
    -static void iuu_shutdown(struct usb_serial *serial)
    +/* Release function */
    +static void iuu_release(struct usb_serial *serial)
    {
    struct usb_serial_port *port = serial->port[0];
    struct iuu_private *priv = usb_get_serial_port_data(port);
    @@ -1171,7 +1171,7 @@ static struct usb_serial_driver iuu_devi
    .tiocmget = iuu_tiocmget,
    .tiocmset = iuu_tiocmset,
    .attach = iuu_startup,
    - .shutdown = iuu_shutdown,
    + .release = iuu_release,
    };

    static int __init iuu_init(void)
    --- a/drivers/usb/serial/keyspan.c
    +++ b/drivers/usb/serial/keyspan.c
    @@ -2678,7 +2678,7 @@ static int keyspan_startup(struct usb_se
    return 0;
    }

    -static void keyspan_shutdown(struct usb_serial *serial)
    +static void keyspan_disconnect(struct usb_serial *serial)
    {
    int i, j;
    struct usb_serial_port *port;
    @@ -2718,6 +2718,17 @@ static void keyspan_shutdown(struct usb_
    usb_free_urb(p_priv->out_urbs[j]);
    }
    }
    +}
    +
    +static void keyspan_release(struct usb_serial *serial)
    +{
    + int i;
    + struct usb_serial_port *port;
    + struct keyspan_serial_private *s_priv;
    +
    + dbg("%s", __func__);
    +
    + s_priv = usb_get_serial_data(serial);

    /* dbg("Freeing serial->private."); */
    kfree(s_priv);
    --- a/drivers/usb/serial/keyspan.h
    +++ b/drivers/usb/serial/keyspan.h
    @@ -42,7 +42,8 @@ static void keyspan_close (struct tty_s
    struct usb_serial_port *port,
    struct file *filp);
    static int keyspan_startup (struct usb_serial *serial);
    -static void keyspan_shutdown (struct usb_serial *serial);
    +static void keyspan_disconnect (struct usb_serial *serial);
    +static void keyspan_release (struct usb_serial *serial);
    static int keyspan_write_room (struct tty_struct *tty);

    static int keyspan_write (struct tty_struct *tty,
    @@ -569,7 +570,8 @@ static struct usb_serial_driver keyspan_
    .tiocmget = keyspan_tiocmget,
    .tiocmset = keyspan_tiocmset,
    .attach = keyspan_startup,
    - .shutdown = keyspan_shutdown,
    + .disconnect = keyspan_disconnect,
    + .release = keyspan_release,
    };

    static struct usb_serial_driver keyspan_2port_device = {
    @@ -589,7 +591,8 @@ static struct usb_serial_driver keyspan_
    .tiocmget = keyspan_tiocmget,
    .tiocmset = keyspan_tiocmset,
    .attach = keyspan_startup,
    - .shutdown = keyspan_shutdown,
    + .disconnect = keyspan_disconnect,
    + .release = keyspan_release,
    };

    static struct usb_serial_driver keyspan_4port_device = {
    @@ -609,7 +612,8 @@ static struct usb_serial_driver keyspan_
    .tiocmget = keyspan_tiocmget,
    .tiocmset = keyspan_tiocmset,
    .attach = keyspan_startup,
    - .shutdown = keyspan_shutdown,
    + .disconnect = keyspan_disconnect,
    + .release = keyspan_release,
    };

    #endif
    --- a/drivers/usb/serial/keyspan_pda.c
    +++ b/drivers/usb/serial/keyspan_pda.c
    @@ -789,7 +789,7 @@ static int keyspan_pda_startup(struct us
    return 0;
    }

    -static void keyspan_pda_shutdown(struct usb_serial *serial)
    +static void keyspan_pda_release(struct usb_serial *serial)
    {
    dbg("%s", __func__);

    @@ -847,7 +847,7 @@ static struct usb_serial_driver keyspan_
    .tiocmget = keyspan_pda_tiocmget,
    .tiocmset = keyspan_pda_tiocmset,
    .attach = keyspan_pda_startup,
    - .shutdown = keyspan_pda_shutdown,
    + .release = keyspan_pda_release,
    };


    --- a/drivers/usb/serial/kl5kusb105.c
    +++ b/drivers/usb/serial/kl5kusb105.c
    @@ -73,7 +73,8 @@ static int debug;
    * Function prototypes
    */
    static int klsi_105_startup(struct usb_serial *serial);
    -static void klsi_105_shutdown(struct usb_serial *serial);
    +static void klsi_105_disconnect(struct usb_serial *serial);
    +static void klsi_105_release(struct usb_serial *serial);
    static int klsi_105_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void klsi_105_close(struct tty_struct *tty,
    @@ -132,7 +133,8 @@ static struct usb_serial_driver kl5kusb1
    .tiocmget = klsi_105_tiocmget,
    .tiocmset = klsi_105_tiocmset,
    .attach = klsi_105_startup,
    - .shutdown = klsi_105_shutdown,
    + .disconnect = klsi_105_disconnect,
    + .release = klsi_105_release,
    .throttle = klsi_105_throttle,
    .unthrottle = klsi_105_unthrottle,
    };
    @@ -314,7 +316,7 @@ err_cleanup:
    } /* klsi_105_startup */


    -static void klsi_105_shutdown(struct usb_serial *serial)
    +static void klsi_105_disconnect(struct usb_serial *serial)
    {
    int i;

    @@ -324,33 +326,36 @@ static void klsi_105_shutdown(struct usb
    for (i = 0; i < serial->num_ports; ++i) {
    struct klsi_105_private *priv =
    usb_get_serial_port_data(serial->port[i]);
    - unsigned long flags;

    if (priv) {
    /* kill our write urb pool */
    int j;
    struct urb **write_urbs = priv->write_urb_pool;
    - spin_lock_irqsave(&priv->lock, flags);

    for (j = 0; j < NUM_URBS; j++) {
    if (write_urbs[j]) {
    - /* FIXME - uncomment the following
    - * usb_kill_urb call when the host
    - * controllers get fixed to set
    - * urb->dev = NULL after the urb is
    - * finished. Otherwise this call
    - * oopses. */
    - /* usb_kill_urb(write_urbs[j]); */
    - kfree(write_urbs[j]->transfer_buffer);
    + usb_kill_urb(write_urbs[j]);
    usb_free_urb(write_urbs[j]);
    }
    }
    - spin_unlock_irqrestore(&priv->lock, flags);
    - kfree(priv);
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    }
    -} /* klsi_105_shutdown */
    +} /* klsi_105_disconnect */
    +
    +
    +static void klsi_105_release(struct usb_serial *serial)
    +{
    + int i;
    +
    + dbg("%s", __func__);
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    + struct klsi_105_private *priv =
    + usb_get_serial_port_data(serial->port[i]);
    +
    + kfree(priv);
    + }
    +} /* klsi_105_release */

    static int klsi_105_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp)
    --- a/drivers/usb/serial/kobil_sct.c
    +++ b/drivers/usb/serial/kobil_sct.c
    @@ -69,7 +69,7 @@ static int debug;

    /* Function prototypes */
    static int kobil_startup(struct usb_serial *serial);
    -static void kobil_shutdown(struct usb_serial *serial);
    +static void kobil_release(struct usb_serial *serial);
    static int kobil_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void kobil_close(struct tty_struct *tty, struct usb_serial_port *port,
    @@ -118,7 +118,7 @@ static struct usb_serial_driver kobil_de
    .id_table = id_table,
    .num_ports = 1,
    .attach = kobil_startup,
    - .shutdown = kobil_shutdown,
    + .release = kobil_release,
    .ioctl = kobil_ioctl,
    .set_termios = kobil_set_termios,
    .tiocmget = kobil_tiocmget,
    @@ -202,17 +202,13 @@ static int kobil_startup(struct usb_seri
    }


    -static void kobil_shutdown(struct usb_serial *serial)
    +static void kobil_release(struct usb_serial *serial)
    {
    int i;
    dbg("%s - port %d", __func__, serial->port[0]->number);

    - for (i = 0; i < serial->num_ports; ++i) {
    - while (serial->port[i]->port.count > 0)
    - kobil_close(NULL, serial->port[i], NULL);
    + for (i = 0; i < serial->num_ports; ++i)
    kfree(usb_get_serial_port_data(serial->port[i]));
    - usb_set_serial_port_data(serial->port[i], NULL);
    - }
    }


    --- a/drivers/usb/serial/mct_u232.c
    +++ b/drivers/usb/serial/mct_u232.c
    @@ -92,7 +92,7 @@ static int debug;
    * Function prototypes
    */
    static int mct_u232_startup(struct usb_serial *serial);
    -static void mct_u232_shutdown(struct usb_serial *serial);
    +static void mct_u232_release(struct usb_serial *serial);
    static int mct_u232_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void mct_u232_close(struct tty_struct *tty,
    @@ -148,7 +148,7 @@ static struct usb_serial_driver mct_u232
    .tiocmget = mct_u232_tiocmget,
    .tiocmset = mct_u232_tiocmset,
    .attach = mct_u232_startup,
    - .shutdown = mct_u232_shutdown,
    + .release = mct_u232_release,
    };


    @@ -401,7 +401,7 @@ static int mct_u232_startup(struct usb_s
    } /* mct_u232_startup */


    -static void mct_u232_shutdown(struct usb_serial *serial)
    +static void mct_u232_release(struct usb_serial *serial)
    {
    struct mct_u232_private *priv;
    int i;
    @@ -411,12 +411,9 @@ static void mct_u232_shutdown(struct usb
    for (i = 0; i < serial->num_ports; ++i) {
    /* My special items, the standard routines free my urbs */
    priv = usb_get_serial_port_data(serial->port[i]);
    - if (priv) {
    - usb_set_serial_port_data(serial->port[i], NULL);
    - kfree(priv);
    - }
    + kfree(priv);
    }
    -} /* mct_u232_shutdown */
    +} /* mct_u232_release */

    static int mct_u232_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp)
    --- a/drivers/usb/serial/mos7720.c
    +++ b/drivers/usb/serial/mos7720.c
    @@ -1547,19 +1547,16 @@ static int mos7720_startup(struct usb_se
    return 0;
    }

    -static void mos7720_shutdown(struct usb_serial *serial)
    +static void mos7720_release(struct usb_serial *serial)
    {
    int i;

    /* free private structure allocated for serial port */
    - for (i = 0; i < serial->num_ports; ++i) {
    + for (i = 0; i < serial->num_ports; ++i)
    kfree(usb_get_serial_port_data(serial->port[i]));
    - usb_set_serial_port_data(serial->port[i], NULL);
    - }

    /* free private structure allocated for serial device */
    kfree(usb_get_serial_data(serial));
    - usb_set_serial_data(serial, NULL);
    }

    static struct usb_driver usb_driver = {
    @@ -1584,7 +1581,7 @@ static struct usb_serial_driver moschip7
    .throttle = mos7720_throttle,
    .unthrottle = mos7720_unthrottle,
    .attach = mos7720_startup,
    - .shutdown = mos7720_shutdown,
    + .release = mos7720_release,
    .ioctl = mos7720_ioctl,
    .set_termios = mos7720_set_termios,
    .write = mos7720_write,
    --- a/drivers/usb/serial/mos7840.c
    +++ b/drivers/usb/serial/mos7840.c
    @@ -2643,16 +2643,16 @@ error:
    }

    /****************************************************************************
    - * mos7840_shutdown
    + * mos7840_disconnect
    * This function is called whenever the device is removed from the usb bus.
    ****************************************************************************/

    -static void mos7840_shutdown(struct usb_serial *serial)
    +static void mos7840_disconnect(struct usb_serial *serial)
    {
    int i;
    unsigned long flags;
    struct moschip_port *mos7840_port;
    - dbg("%s \n", " shutdown :entering..........");
    + dbg("%s\n", " disconnect :entering..........");

    if (!serial) {
    dbg("%s", "Invalid Handler \n");
    @@ -2670,10 +2670,41 @@ static void mos7840_shutdown(struct usb_
    mos7840_port->zombie = 1;
    spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
    usb_kill_urb(mos7840_port->control_urb);
    - kfree(mos7840_port->ctrl_buf);
    - kfree(mos7840_port->dr);
    - kfree(mos7840_port);
    - mos7840_set_port_private(serial->port[i], NULL);
    + }
    +
    + dbg("%s\n", "Thank u ::");
    +
    +}
    +
    +/****************************************************************************
    + * mos7840_release
    + * This function is called when the usb_serial structure is freed.
    + ****************************************************************************/
    +
    +static void mos7840_release(struct usb_serial *serial)
    +{
    + int i;
    + struct moschip_port *mos7840_port;
    + dbg("%s\n", " release :entering..........");
    +
    + if (!serial) {
    + dbg("%s", "Invalid Handler");
    + return;
    + }
    +
    + /* check for the ports to be closed,close the ports and disconnect */
    +
    + /* free private structure allocated for serial port *
    + * stop reads and writes on all ports */
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    + mos7840_port = mos7840_get_port_private(serial->port[i]);
    + dbg("mos7840_port %d = %p", i, mos7840_port);
    + if (mos7840_port) {
    + kfree(mos7840_port->ctrl_buf);
    + kfree(mos7840_port->dr);
    + kfree(mos7840_port);
    + }
    }

    dbg("%s\n", "Thank u :: ");
    @@ -2714,7 +2745,8 @@ static struct usb_serial_driver moschip7
    .tiocmget = mos7840_tiocmget,
    .tiocmset = mos7840_tiocmset,
    .attach = mos7840_startup,
    - .shutdown = mos7840_shutdown,
    + .disconnect = mos7840_disconnect,
    + .release = mos7840_release,
    .read_bulk_callback = mos7840_bulk_in_callback,
    .read_int_callback = mos7840_interrupt_callback,
    };
    --- a/drivers/usb/serial/omninet.c
    +++ b/drivers/usb/serial/omninet.c
    @@ -73,7 +73,8 @@ static void omninet_write_bulk_callback(
    static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port,
    const unsigned char *buf, int count);
    static int omninet_write_room(struct tty_struct *tty);
    -static void omninet_shutdown(struct usb_serial *serial);
    +static void omninet_disconnect(struct usb_serial *serial);
    +static void omninet_release(struct usb_serial *serial);
    static int omninet_attach(struct usb_serial *serial);

    static struct usb_device_id id_table[] = {
    @@ -109,7 +110,8 @@ static struct usb_serial_driver zyxel_om
    .write_room = omninet_write_room,
    .read_bulk_callback = omninet_read_bulk_callback,
    .write_bulk_callback = omninet_write_bulk_callback,
    - .shutdown = omninet_shutdown,
    + .disconnect = omninet_disconnect,
    + .release = omninet_release,
    };


    @@ -342,13 +344,22 @@ static void omninet_write_bulk_callback(
    }


    -static void omninet_shutdown(struct usb_serial *serial)
    +static void omninet_disconnect(struct usb_serial *serial)
    {
    struct usb_serial_port *wport = serial->port[1];
    - struct usb_serial_port *port = serial->port[0];
    +
    dbg("%s", __func__);

    usb_kill_urb(wport->write_urb);
    +}
    +
    +
    +static void omninet_release(struct usb_serial *serial)
    +{
    + struct usb_serial_port *port = serial->port[0];
    +
    + dbg("%s", __func__);
    +
    kfree(usb_get_serial_port_data(port));
    }

    --- a/drivers/usb/serial/option.c
    +++ b/drivers/usb/serial/option.c
    @@ -48,7 +48,8 @@ static int option_open(struct tty_struc
    static void option_close(struct tty_struct *tty, struct usb_serial_port *port,
    struct file *filp);
    static int option_startup(struct usb_serial *serial);
    -static void option_shutdown(struct usb_serial *serial);
    +static void option_disconnect(struct usb_serial *serial);
    +static void option_release(struct usb_serial *serial);
    static int option_write_room(struct tty_struct *tty);

    static void option_instat_callback(struct urb *urb);
    @@ -541,7 +542,8 @@ static struct usb_serial_driver option_1
    .tiocmget = option_tiocmget,
    .tiocmset = option_tiocmset,
    .attach = option_startup,
    - .shutdown = option_shutdown,
    + .disconnect = option_disconnect,
    + .release = option_release,
    .read_int_callback = option_instat_callback,
    .suspend = option_suspend,
    .resume = option_resume,
    @@ -1112,7 +1114,14 @@ static void stop_read_write_urbs(struct
    }
    }

    -static void option_shutdown(struct usb_serial *serial)
    +static void option_disconnect(struct usb_serial *serial)
    +{
    + dbg("%s", __func__);
    +
    + stop_read_write_urbs(serial);
    +}
    +
    +static void option_release(struct usb_serial *serial)
    {
    int i, j;
    struct usb_serial_port *port;
    @@ -1120,8 +1129,6 @@ static void option_shutdown(struct usb_s

    dbg("%s", __func__);

    - stop_read_write_urbs(serial);
    -
    /* Now free them */
    for (i = 0; i < serial->num_ports; ++i) {
    port = serial->port[i];
    --- a/drivers/usb/serial/oti6858.c
    +++ b/drivers/usb/serial/oti6858.c
    @@ -160,7 +160,7 @@ static int oti6858_tiocmget(struct tty_s
    static int oti6858_tiocmset(struct tty_struct *tty, struct file *file,
    unsigned int set, unsigned int clear);
    static int oti6858_startup(struct usb_serial *serial);
    -static void oti6858_shutdown(struct usb_serial *serial);
    +static void oti6858_release(struct usb_serial *serial);

    /* functions operating on buffers */
    static struct oti6858_buf *oti6858_buf_alloc(unsigned int size);
    @@ -195,7 +195,7 @@ static struct usb_serial_driver oti6858_
    .write_room = oti6858_write_room,
    .chars_in_buffer = oti6858_chars_in_buffer,
    .attach = oti6858_startup,
    - .shutdown = oti6858_shutdown,
    + .release = oti6858_release,
    };

    struct oti6858_private {
    @@ -833,7 +833,7 @@ static int oti6858_ioctl(struct tty_stru
    }


    -static void oti6858_shutdown(struct usb_serial *serial)
    +static void oti6858_release(struct usb_serial *serial)
    {
    struct oti6858_private *priv;
    int i;
    @@ -845,7 +845,6 @@ static void oti6858_shutdown(struct usb_
    if (priv) {
    oti6858_buf_free(priv->buf);
    kfree(priv);
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    }
    }
    --- a/drivers/usb/serial/pl2303.c
    +++ b/drivers/usb/serial/pl2303.c
    @@ -905,7 +905,7 @@ static void pl2303_break_ctl(struct tty_
    dbg("%s - error sending break = %d", __func__, result);
    }

    -static void pl2303_shutdown(struct usb_serial *serial)
    +static void pl2303_release(struct usb_serial *serial)
    {
    int i;
    struct pl2303_private *priv;
    @@ -917,7 +917,6 @@ static void pl2303_shutdown(struct usb_s
    if (priv) {
    pl2303_buf_free(priv->buf);
    kfree(priv);
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    }
    }
    @@ -1145,7 +1144,7 @@ static struct usb_serial_driver pl2303_d
    .write_room = pl2303_write_room,
    .chars_in_buffer = pl2303_chars_in_buffer,
    .attach = pl2303_startup,
    - .shutdown = pl2303_shutdown,
    + .release = pl2303_release,
    };

    static int __init pl2303_init(void)
    --- a/drivers/usb/serial/sierra.c
    +++ b/drivers/usb/serial/sierra.c
    @@ -677,7 +677,7 @@ static int sierra_startup(struct usb_ser
    return 0;
    }

    -static void sierra_shutdown(struct usb_serial *serial)
    +static void sierra_disconnect(struct usb_serial *serial)
    {
    int i, j;
    struct usb_serial_port *port;
    @@ -696,10 +696,29 @@ static void sierra_shutdown(struct usb_s
    for (j = 0; j < N_IN_URB; j++) {
    usb_kill_urb(portdata->in_urbs[j]);
    usb_free_urb(portdata->in_urbs[j]);
    - kfree(portdata->in_buffer[j]);
    }
    + }
    +}
    +
    +static void sierra_release(struct usb_serial *serial)
    +{
    + int i, j;
    + struct usb_serial_port *port;
    + struct sierra_port_private *portdata;
    +
    + dev_dbg(&serial->dev->dev, "%s\n", __func__);
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    + port = serial->port[i];
    + if (!port)
    + continue;
    + portdata = usb_get_serial_port_data(port);
    + if (!portdata)
    + continue;
    +
    + for (j = 0; j < N_IN_URB; j++)
    + kfree(portdata->in_buffer[j]);
    kfree(portdata);
    - usb_set_serial_port_data(port, NULL);
    }
    }

    @@ -721,7 +740,8 @@ static struct usb_serial_driver sierra_d
    .tiocmget = sierra_tiocmget,
    .tiocmset = sierra_tiocmset,
    .attach = sierra_startup,
    - .shutdown = sierra_shutdown,
    + .disconnect = sierra_disconnect,
    + .release = sierra_release,
    .read_int_callback = sierra_instat_callback,
    };

    --- a/drivers/usb/serial/spcp8x5.c
    +++ b/drivers/usb/serial/spcp8x5.c
    @@ -356,7 +356,7 @@ cleanup:
    }

    /* call when the device plug out. free all the memory alloced by probe */
    -static void spcp8x5_shutdown(struct usb_serial *serial)
    +static void spcp8x5_release(struct usb_serial *serial)
    {
    int i;
    struct spcp8x5_private *priv;
    @@ -366,7 +366,6 @@ static void spcp8x5_shutdown(struct usb_
    if (priv) {
    free_ringbuf(priv->buf);
    kfree(priv);
    - usb_set_serial_port_data(serial->port[i] , NULL);
    }
    }
    }
    @@ -1041,7 +1040,7 @@ static struct usb_serial_driver spcp8x5_
    .write_bulk_callback = spcp8x5_write_bulk_callback,
    .chars_in_buffer = spcp8x5_chars_in_buffer,
    .attach = spcp8x5_startup,
    - .shutdown = spcp8x5_shutdown,
    + .release = spcp8x5_release,
    };

    static int __init spcp8x5_init(void)
    --- a/drivers/usb/serial/ti_usb_3410_5052.c
    +++ b/drivers/usb/serial/ti_usb_3410_5052.c
    @@ -148,7 +148,7 @@ struct ti_device {
    /* Function Declarations */

    static int ti_startup(struct usb_serial *serial);
    -static void ti_shutdown(struct usb_serial *serial);
    +static void ti_release(struct usb_serial *serial);
    static int ti_open(struct tty_struct *tty, struct usb_serial_port *port,
    struct file *file);
    static void ti_close(struct tty_struct *tty, struct usb_serial_port *port,
    @@ -271,7 +271,7 @@ static struct usb_serial_driver ti_1port
    .id_table = ti_id_table_3410,
    .num_ports = 1,
    .attach = ti_startup,
    - .shutdown = ti_shutdown,
    + .release = ti_release,
    .open = ti_open,
    .close = ti_close,
    .write = ti_write,
    @@ -299,7 +299,7 @@ static struct usb_serial_driver ti_2port
    .id_table = ti_id_table_5052,
    .num_ports = 2,
    .attach = ti_startup,
    - .shutdown = ti_shutdown,
    + .release = ti_release,
    .open = ti_open,
    .close = ti_close,
    .write = ti_write,
    @@ -506,7 +506,7 @@ free_tdev:
    }


    -static void ti_shutdown(struct usb_serial *serial)
    +static void ti_release(struct usb_serial *serial)
    {
    int i;
    struct ti_device *tdev = usb_get_serial_data(serial);
    @@ -519,12 +519,10 @@ static void ti_shutdown(struct usb_seria
    if (tport) {
    ti_buf_free(tport->tp_write_buf);
    kfree(tport);
    - usb_set_serial_port_data(serial->port[i], NULL);
    }
    }

    kfree(tdev);
    - usb_set_serial_data(serial, NULL);
    }


    --- a/drivers/usb/serial/usb-serial.c
    +++ b/drivers/usb/serial/usb-serial.c
    @@ -140,6 +140,14 @@ static void destroy_serial(struct kref *
    if (serial->minor != SERIAL_TTY_NO_MINOR)
    return_serial(serial);

    + serial->type->release(serial);
    +
    + for (i = 0; i < serial->num_ports; ++i) {
    + port = serial->port[i];
    + if (port)
    + put_device(&port->dev);
    + }
    +
    /* If this is a "fake" port, we have to clean it up here, as it will
    * not get cleaned up in port_release() as it was never registered with
    * the driver core */
    @@ -147,9 +155,8 @@ static void destroy_serial(struct kref *
    for (i = serial->num_ports;
    i < serial->num_port_pointers; ++i) {
    port = serial->port[i];
    - if (!port)
    - continue;
    - port_free(port);
    + if (port)
    + port_free(port);
    }
    }

    @@ -1061,10 +1068,6 @@ void usb_serial_disconnect(struct usb_in
    serial->disconnected = 1;
    mutex_unlock(&serial->disc_mutex);

    - /* Unfortunately, many of the sub-drivers expect the port structures
    - * to exist when their shutdown method is called, so we have to go
    - * through this awkward two-step unregistration procedure.
    - */
    for (i = 0; i < serial->num_ports; ++i) {
    port = serial->port[i];
    if (port) {
    @@ -1075,14 +1078,7 @@ void usb_serial_disconnect(struct usb_in
    device_del(&port->dev);
    }
    }
    - serial->type->shutdown(serial);
    - for (i = 0; i < serial->num_ports; ++i) {
    - port = serial->port[i];
    - if (port) {
    - put_device(&port->dev);
    - serial->port[i] = NULL;
    - }
    - }
    + serial->type->disconnect(serial);

    /* let the last holder of this object
    * cause it to be cleaned up */
    @@ -1246,7 +1242,8 @@ static void fixup_generic(struct usb_ser
    set_to_generic_if_null(device, chars_in_buffer);
    set_to_generic_if_null(device, read_bulk_callback);
    set_to_generic_if_null(device, write_bulk_callback);
    - set_to_generic_if_null(device, shutdown);
    + set_to_generic_if_null(device, disconnect);
    + set_to_generic_if_null(device, release);
    set_to_generic_if_null(device, resume);
    }

    --- a/drivers/usb/serial/visor.c
    +++ b/drivers/usb/serial/visor.c
    @@ -48,7 +48,7 @@ static void visor_unthrottle(struct tty_
    static int visor_probe(struct usb_serial *serial,
    const struct usb_device_id *id);
    static int visor_calc_num_ports(struct usb_serial *serial);
    -static void visor_shutdown(struct usb_serial *serial);
    +static void visor_release(struct usb_serial *serial);
    static void visor_write_bulk_callback(struct urb *urb);
    static void visor_read_bulk_callback(struct urb *urb);
    static void visor_read_int_callback(struct urb *urb);
    @@ -203,7 +203,7 @@ static struct usb_serial_driver handspri
    .attach = treo_attach,
    .probe = visor_probe,
    .calc_num_ports = visor_calc_num_ports,
    - .shutdown = visor_shutdown,
    + .release = visor_release,
    .write = visor_write,
    .write_room = visor_write_room,
    .write_bulk_callback = visor_write_bulk_callback,
    @@ -228,7 +228,7 @@ static struct usb_serial_driver clie_5_d
    .attach = clie_5_attach,
    .probe = visor_probe,
    .calc_num_ports = visor_calc_num_ports,
    - .shutdown = visor_shutdown,
    + .release = visor_release,
    .write = visor_write,
    .write_room = visor_write_room,
    .write_bulk_callback = visor_write_bulk_callback,
    @@ -916,7 +916,7 @@ static int clie_5_attach(struct usb_seri
    return generic_startup(serial);
    }

    -static void visor_shutdown(struct usb_serial *serial)
    +static void visor_release(struct usb_serial *serial)
    {
    struct visor_private *priv;
    int i;
    @@ -925,10 +925,7 @@ static void visor_shutdown(struct usb_se

    for (i = 0; i < serial->num_ports; i++) {
    priv = usb_get_serial_port_data(serial->port[i]);
    - if (priv) {
    - usb_set_serial_port_data(serial->port[i], NULL);
    - kfree(priv);
    - }
    + kfree(priv);
    }
    }

    --- a/drivers/usb/serial/whiteheat.c
    +++ b/drivers/usb/serial/whiteheat.c
    @@ -144,7 +144,7 @@ static int whiteheat_firmware_attach(st

    /* function prototypes for the Connect Tech WhiteHEAT serial converter */
    static int whiteheat_attach(struct usb_serial *serial);
    -static void whiteheat_shutdown(struct usb_serial *serial);
    +static void whiteheat_release(struct usb_serial *serial);
    static int whiteheat_open(struct tty_struct *tty,
    struct usb_serial_port *port, struct file *filp);
    static void whiteheat_close(struct tty_struct *tty,
    @@ -190,7 +190,7 @@ static struct usb_serial_driver whitehea
    .id_table = id_table_std,
    .num_ports = 4,
    .attach = whiteheat_attach,
    - .shutdown = whiteheat_shutdown,
    + .release = whiteheat_release,
    .open = whiteheat_open,
    .close = whiteheat_close,
    .write = whiteheat_write,
    @@ -600,7 +600,7 @@ no_command_buffer:
    }


    -static void whiteheat_shutdown(struct usb_serial *serial)
    +static void whiteheat_release(struct usb_serial *serial)
    {
    struct usb_serial_port *command_port;
    struct usb_serial_port *port;
    --- a/include/linux/usb/serial.h
    +++ b/include/linux/usb/serial.h
    @@ -177,8 +177,10 @@ static inline void usb_set_serial_data(s
    * 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.
    @@ -208,7 +210,8 @@ struct usb_serial_driver {
    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);
    @@ -288,7 +291,8 @@ extern void usb_serial_generic_read_bulk
    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);




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