Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull tty ioctl updates from Al Viro:
 "This is the compat_ioctl work related to tty ioctls.

  Quite a bit of dead code taken out, all tty-related stuff gone from
  fs/compat_ioctl.c. A bunch of compat bugs fixed - some still remain,
  but all more or less generic tty-related ioctls should be covered
  (remaining issues are in things like driver-private ioctls in a pcmcia
  serial card driver not getting properly handled in 32bit processes on
  64bit host, etc)"

* 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (53 commits)
  kill TIOCSERGSTRUCT
  change semantics of ldisc ->compat_ioctl()
  kill TIOCSER[SG]WILD
  synclink_gt(): fix compat_ioctl()
  pty: fix compat ioctls
  compat_ioctl - kill keyboard ioctl handling
  gigaset: add ->compat_ioctl()
  vt_compat_ioctl(): clean up, use compat_ptr() properly
  gigaset: don't try to printk userland buffer contents
  dgnc: don't bother with (empty) stub for TCXONC
  dgnc: leave TIOC[GS]SOFTCAR to ldisc
  remove fallback to drivers for TIOCGICOUNT
  dgnc: break-related ioctls won't reach ->ioctl()
  kill the rest of tty COMPAT_IOCTL() entries
  dgnc: TIOCM... won't reach ->ioctl()
  isdn_tty: TCSBRK{,P} won't reach ->ioctl()
  kill capinc_tty_ioctl()
  take compat TIOC[SG]SERIAL treatment into tty_compat_ioctl()
  synclink: reduce pointless checks in ->ioctl()
  complete ->[sg]et_serial() switchover
  ...

18 files changed, 225 insertions, 508 deletions

diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index 7796ad8e33c6..ff38aa8963cf 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -397,38 +397,16 @@ err_free:
 	return result;
 }
 
-static int ark3116_get_serial_info(struct usb_serial_port *port,
-			struct serial_struct __user *retinfo)
-{
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type = PORT_16654;
-	tmp.line = port->minor;
-	tmp.port = port->port_number;
-	tmp.baud_base = 460800;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(tmp)))
-		return -EFAULT;
-
-	return 0;
-}
-
-static int ark3116_ioctl(struct tty_struct *tty,
-			 unsigned int cmd, unsigned long arg)
+static int ark3116_get_serial_info(struct tty_struct *tty,
+			struct serial_struct *ss)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	void __user *user_arg = (void __user *)arg;
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return ark3116_get_serial_info(port, user_arg);
-	default:
-		break;
-	}
 
-	return -ENOIOCTLCMD;
+	ss->type = PORT_16654;
+	ss->line = port->minor;
+	ss->port = port->port_number;
+	ss->baud_base = 460800;
+	return 0;
 }
 
 static int ark3116_tiocmget(struct tty_struct *tty)
@@ -668,7 +646,7 @@ static struct usb_serial_driver ark3116_device = {
 	.port_remove =		ark3116_port_remove,
 	.set_termios =		ark3116_set_termios,
 	.init_termios =		ark3116_init_termios,
-	.ioctl =		ark3116_ioctl,
+	.get_serial =		ark3116_get_serial_info,
 	.tiocmget =		ark3116_tiocmget,
 	.tiocmset =		ark3116_tiocmset,
 	.tiocmiwait =		usb_serial_generic_tiocmiwait,
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 96036f87b1de..0dcdcb4b2cde 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -583,36 +583,16 @@ static int f81232_carrier_raised(struct usb_serial_port *port)
 	return 0;
 }
 
-static int f81232_get_serial_info(struct usb_serial_port *port,
-		unsigned long arg)
-{
-	struct serial_struct ser;
-
-	memset(&ser, 0, sizeof(ser));
-
-	ser.type = PORT_16550A;
-	ser.line = port->minor;
-	ser.port = port->port_number;
-	ser.baud_base = F81232_MAX_BAUDRATE;
-
-	if (copy_to_user((void __user *)arg, &ser, sizeof(ser)))
-		return -EFAULT;
-
-	return 0;
-}
-
-static int f81232_ioctl(struct tty_struct *tty,
-			unsigned int cmd, unsigned long arg)
+static int f81232_get_serial_info(struct tty_struct *tty,
+		struct serial_struct *ss)
 {
 	struct usb_serial_port *port = tty->driver_data;
 
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return f81232_get_serial_info(port, arg);
-	default:
-		break;
-	}
-	return -ENOIOCTLCMD;
+	ss->type = PORT_16550A;
+	ss->line = port->minor;
+	ss->port = port->port_number;
+	ss->baud_base = F81232_MAX_BAUDRATE;
+	return 0;
 }
 
 static void  f81232_interrupt_work(struct work_struct *work)
@@ -665,7 +645,7 @@ static struct usb_serial_driver f81232_device = {
 	.close =		f81232_close,
 	.dtr_rts =		f81232_dtr_rts,
 	.carrier_raised =	f81232_carrier_raised,
-	.ioctl =		f81232_ioctl,
+	.get_serial =		f81232_get_serial_info,
 	.break_ctl =		f81232_break_ctl,
 	.set_termios =		f81232_set_termios,
 	.tiocmget =		f81232_tiocmget,
diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c
index 4dfbff20bda4..380933db34dd 100644
--- a/drivers/usb/serial/f81534.c
+++ b/drivers/usb/serial/f81534.c
@@ -1139,43 +1139,21 @@ static void f81534_close(struct usb_serial_port *port)
 	mutex_unlock(&serial_priv->urb_mutex);
 }
 
-static int f81534_get_serial_info(struct usb_serial_port *port,
-				  struct serial_struct __user *retinfo)
+static int f81534_get_serial_info(struct tty_struct *tty,
+				  struct serial_struct *ss)
 {
+	struct usb_serial_port *port = tty->driver_data;
 	struct f81534_port_private *port_priv;
-	struct serial_struct tmp;
 
 	port_priv = usb_get_serial_port_data(port);
 
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type = PORT_16550A;
-	tmp.port = port->port_number;
-	tmp.line = port->minor;
-	tmp.baud_base = port_priv->baud_base;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-
+	ss->type = PORT_16550A;
+	ss->port = port->port_number;
+	ss->line = port->minor;
+	ss->baud_base = port_priv->baud_base;
 	return 0;
 }
 
-static int f81534_ioctl(struct tty_struct *tty, unsigned int cmd,
-			unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct serial_struct __user *buf = (struct serial_struct __user *)arg;
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return f81534_get_serial_info(port, buf);
-	default:
-		break;
-	}
-
-	return -ENOIOCTLCMD;
-}
-
 static void f81534_process_per_serial_block(struct usb_serial_port *port,
 		u8 *data)
 {
@@ -1581,7 +1559,7 @@ static struct usb_serial_driver f81534_device = {
 	.break_ctl =		f81534_break_ctl,
 	.dtr_rts =		f81534_dtr_rts,
 	.process_read_urb =	f81534_process_read_urb,
-	.ioctl =		f81534_ioctl,
+	.get_serial =		f81534_get_serial_info,
 	.tiocmget =		f81534_tiocmget,
 	.tiocmset =		f81534_tiocmset,
 	.write_bulk_callback =	f81534_write_usb_callback,
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index b5cef322826f..758ba789e997 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1055,6 +1055,10 @@ static int  ftdi_tiocmset(struct tty_struct *tty,
 			unsigned int set, unsigned int clear);
 static int  ftdi_ioctl(struct tty_struct *tty,
 			unsigned int cmd, unsigned long arg);
+static int get_serial_info(struct tty_struct *tty,
+				struct serial_struct *ss);
+static int set_serial_info(struct tty_struct *tty,
+				struct serial_struct *ss);
 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
 static bool ftdi_tx_empty(struct usb_serial_port *port);
 static int ftdi_get_modem_status(struct usb_serial_port *port,
@@ -1091,6 +1095,8 @@ static struct usb_serial_driver ftdi_sio_device = {
 	.tiocmiwait =		usb_serial_generic_tiocmiwait,
 	.get_icount =           usb_serial_generic_get_icount,
 	.ioctl =		ftdi_ioctl,
+	.get_serial =		get_serial_info,
+	.set_serial =		set_serial_info,
 	.set_termios =		ftdi_set_termios,
 	.break_ctl =		ftdi_break_ctl,
 	.tx_empty =		ftdi_tx_empty,
@@ -1443,48 +1449,42 @@ static int read_latency_timer(struct usb_serial_port *port)
 	return 0;
 }
 
-static int get_serial_info(struct usb_serial_port *port,
-				struct serial_struct __user *retinfo)
+static int get_serial_info(struct tty_struct *tty,
+				struct serial_struct *ss)
 {
+	struct usb_serial_port *port = tty->driver_data;
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	struct serial_struct tmp;
 
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.flags = priv->flags;
-	tmp.baud_base = priv->baud_base;
-	tmp.custom_divisor = priv->custom_divisor;
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
+	ss->flags = priv->flags;
+	ss->baud_base = priv->baud_base;
+	ss->custom_divisor = priv->custom_divisor;
 	return 0;
 }
 
 static int set_serial_info(struct tty_struct *tty,
-	struct usb_serial_port *port, struct serial_struct __user *newinfo)
+	struct serial_struct *ss)
 {
+	struct usb_serial_port *port = tty->driver_data;
 	struct ftdi_private *priv = usb_get_serial_port_data(port);
-	struct serial_struct new_serial;
 	struct ftdi_private old_priv;
 
-	if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
-		return -EFAULT;
-
 	mutex_lock(&priv->cfg_lock);
 	old_priv = *priv;
 
 	/* Do error checking and permission checking */
 
 	if (!capable(CAP_SYS_ADMIN)) {
-		if ((new_serial.flags ^ priv->flags) & ~ASYNC_USR_MASK) {
+		if ((ss->flags ^ priv->flags) & ~ASYNC_USR_MASK) {
 			mutex_unlock(&priv->cfg_lock);
 			return -EPERM;
 		}
 		priv->flags = ((priv->flags & ~ASYNC_USR_MASK) |
-			       (new_serial.flags & ASYNC_USR_MASK));
-		priv->custom_divisor = new_serial.custom_divisor;
+			       (ss->flags & ASYNC_USR_MASK));
+		priv->custom_divisor = ss->custom_divisor;
 		goto check_and_exit;
 	}
 
-	if (new_serial.baud_base != priv->baud_base) {
+	if (ss->baud_base != priv->baud_base) {
 		mutex_unlock(&priv->cfg_lock);
 		return -EINVAL;
 	}
@@ -1492,8 +1492,8 @@ static int set_serial_info(struct tty_struct *tty,
 	/* Make the changes - these are privileged changes! */
 
 	priv->flags = ((priv->flags & ~ASYNC_FLAGS) |
-					(new_serial.flags & ASYNC_FLAGS));
-	priv->custom_divisor = new_serial.custom_divisor;
+					(ss->flags & ASYNC_FLAGS));
+	priv->custom_divisor = ss->custom_divisor;
 
 check_and_exit:
 	write_latency_timer(port);
@@ -1507,10 +1507,8 @@ check_and_exit:
 			dev_warn_ratelimited(&port->dev, "use of SPD flags is deprecated\n");
 
 		change_speed(tty, port);
-		mutex_unlock(&priv->cfg_lock);
 	}
-	else
-		mutex_unlock(&priv->cfg_lock);
+	mutex_unlock(&priv->cfg_lock);
 	return 0;
 }
 
@@ -2452,10 +2450,6 @@ static int ftdi_ioctl(struct tty_struct *tty,
 	void __user *argp = (void __user *)arg;
 
 	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(port, argp);
-	case TIOCSSERIAL:
-		return set_serial_info(tty, port, argp);
 	case TIOCSERGETLSR:
 		return get_lsr_info(port, argp);
 	default:
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 97c69d373ca6..4ca31c0e4174 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -1637,24 +1637,20 @@ static int edge_tiocmget(struct tty_struct *tty)
 	return result;
 }
 
-static int get_serial_info(struct edgeport_port *edge_port,
-				struct serial_struct __user *retinfo)
+static int get_serial_info(struct tty_struct *tty,
+				struct serial_struct *ss)
 {
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type		= PORT_16550A;
-	tmp.line		= edge_port->port->minor;
-	tmp.port		= edge_port->port->port_number;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= edge_port->maxTxCredits;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= 30*HZ;
+	struct usb_serial_port *port = tty->driver_data;
+	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
+	ss->type		= PORT_16550A;
+	ss->line		= edge_port->port->minor;
+	ss->port		= edge_port->port->port_number;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= edge_port->maxTxCredits;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= 30*HZ;
 	return 0;
 }
 
@@ -1667,17 +1663,12 @@ static int edge_ioctl(struct tty_struct *tty,
 					unsigned int cmd, unsigned long arg)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	DEFINE_WAIT(wait);
 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 
 	switch (cmd) {
 	case TIOCSERGETLSR:
 		dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
 		return get_lsr_info(edge_port, (unsigned int __user *) arg);
-
-	case TIOCGSERIAL:
-		dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
-		return get_serial_info(edge_port, (struct serial_struct __user *) arg);
 	}
 	return -ENOIOCTLCMD;
 }
@@ -3126,6 +3117,7 @@ static struct usb_serial_driver edgeport_2port_device = {
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
+	.get_serial		= get_serial_info,
 	.tiocmiwait		= usb_serial_generic_tiocmiwait,
 	.get_icount		= usb_serial_generic_get_icount,
 	.write			= edge_write,
@@ -3161,6 +3153,7 @@ static struct usb_serial_driver edgeport_4port_device = {
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
+	.get_serial		= get_serial_info,
 	.tiocmiwait		= usb_serial_generic_tiocmiwait,
 	.get_icount		= usb_serial_generic_get_icount,
 	.write			= edge_write,
@@ -3196,6 +3189,7 @@ static struct usb_serial_driver edgeport_8port_device = {
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
+	.get_serial		= get_serial_info,
 	.tiocmiwait		= usb_serial_generic_tiocmiwait,
 	.get_icount		= usb_serial_generic_get_icount,
 	.write			= edge_write,
@@ -3231,6 +3225,7 @@ static struct usb_serial_driver epic_device = {
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
+	.get_serial		= get_serial_info,
 	.tiocmiwait		= usb_serial_generic_tiocmiwait,
 	.get_icount		= usb_serial_generic_get_icount,
 	.write			= edge_write,
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index 6d1d6efa3055..c327d4cf7928 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -2437,47 +2437,28 @@ static int edge_tiocmget(struct tty_struct *tty)
 	return result;
 }
 
-static int get_serial_info(struct edgeport_port *edge_port,
-				struct serial_struct __user *retinfo)
+static int get_serial_info(struct tty_struct *tty,
+				struct serial_struct *ss)
 {
-	struct serial_struct tmp;
+	struct usb_serial_port *port = tty->driver_data;
+	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 	unsigned cwait;
 
 	cwait = edge_port->port->port.closing_wait;
 	if (cwait != ASYNC_CLOSING_WAIT_NONE)
 		cwait = jiffies_to_msecs(cwait) / 10;
 
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type		= PORT_16550A;
-	tmp.line		= edge_port->port->minor;
-	tmp.port		= edge_port->port->port_number;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= edge_port->port->bulk_out_size;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= cwait;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
+	ss->type		= PORT_16550A;
+	ss->line		= edge_port->port->minor;
+	ss->port		= edge_port->port->port_number;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= edge_port->port->bulk_out_size;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= cwait;
 	return 0;
 }
 
-static int edge_ioctl(struct tty_struct *tty,
-					unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct edgeport_port *edge_port = usb_get_serial_port_data(port);
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
-		return get_serial_info(edge_port,
-				(struct serial_struct __user *) arg);
-	}
-	return -ENOIOCTLCMD;
-}
-
 static void edge_break(struct tty_struct *tty, int break_state)
 {
 	struct usb_serial_port *port = tty->driver_data;
@@ -2738,7 +2719,7 @@ static struct usb_serial_driver edgeport_1port_device = {
 	.release		= edge_release,
 	.port_probe		= edge_port_probe,
 	.port_remove		= edge_port_remove,
-	.ioctl			= edge_ioctl,
+	.get_serial		= get_serial_info,
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
@@ -2777,7 +2758,7 @@ static struct usb_serial_driver edgeport_2port_device = {
 	.release		= edge_release,
 	.port_probe		= edge_port_probe,
 	.port_remove		= edge_port_remove,
-	.ioctl			= edge_ioctl,
+	.get_serial		= get_serial_info,
 	.set_termios		= edge_set_termios,
 	.tiocmget		= edge_tiocmget,
 	.tiocmset		= edge_tiocmset,
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 27109522fd8b..fc52ac75fbf6 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -1786,69 +1786,20 @@ static int mos7720_tiocmset(struct tty_struct *tty,
 	return 0;
 }
 
-static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd,
-			  unsigned int __user *value)
+static int get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
-	unsigned int mcr;
-	unsigned int arg;
-
-	struct usb_serial_port *port;
-
-	if (mos7720_port == NULL)
-		return -1;
-
-	port = (struct usb_serial_port *)mos7720_port->port;
-	mcr = mos7720_port->shadowMCR;
-
-	if (copy_from_user(&arg, value, sizeof(int)))
-		return -EFAULT;
-
-	switch (cmd) {
-	case TIOCMBIS:
-		if (arg & TIOCM_RTS)
-			mcr |= UART_MCR_RTS;
-		if (arg & TIOCM_DTR)
-			mcr |= UART_MCR_RTS;
-		if (arg & TIOCM_LOOP)
-			mcr |= UART_MCR_LOOP;
-		break;
-
-	case TIOCMBIC:
-		if (arg & TIOCM_RTS)
-			mcr &= ~UART_MCR_RTS;
-		if (arg & TIOCM_DTR)
-			mcr &= ~UART_MCR_RTS;
-		if (arg & TIOCM_LOOP)
-			mcr &= ~UART_MCR_LOOP;
-		break;
-
-	}
-
-	mos7720_port->shadowMCR = mcr;
-	write_mos_reg(port->serial, port->port_number, MOS7720_MCR,
-		      mos7720_port->shadowMCR);
-
-	return 0;
-}
-
-static int get_serial_info(struct moschip_port *mos7720_port,
-			   struct serial_struct __user *retinfo)
-{
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type		= PORT_16550A;
-	tmp.line		= mos7720_port->port->minor;
-	tmp.port		= mos7720_port->port->port_number;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= 30*HZ;
+	struct usb_serial_port *port = tty->driver_data;
+	struct moschip_port *mos7720_port = usb_get_serial_port_data(port);
 
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
+	ss->type		= PORT_16550A;
+	ss->line		= mos7720_port->port->minor;
+	ss->port		= mos7720_port->port->port_number;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= 30*HZ;
 	return 0;
 }
 
@@ -1867,18 +1818,6 @@ static int mos7720_ioctl(struct tty_struct *tty,
 		dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
 		return get_lsr_info(tty, mos7720_port,
 					(unsigned int __user *)arg);
-
-	/* FIXME: These should be using the mode methods */
-	case TIOCMBIS:
-	case TIOCMBIC:
-		dev_dbg(&port->dev, "%s TIOCMSET/TIOCMBIC/TIOCMSET\n", __func__);
-		return set_modem_info(mos7720_port, cmd,
-				      (unsigned int __user *)arg);
-
-	case TIOCGSERIAL:
-		dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
-		return get_serial_info(mos7720_port,
-				       (struct serial_struct __user *)arg);
 	}
 
 	return -ENOIOCTLCMD;
@@ -2015,6 +1954,7 @@ static struct usb_serial_driver moschip7720_2port_driver = {
 	.ioctl			= mos7720_ioctl,
 	.tiocmget		= mos7720_tiocmget,
 	.tiocmset		= mos7720_tiocmset,
+	.get_serial		= get_serial_info,
 	.set_termios		= mos7720_set_termios,
 	.write			= mos7720_write,
 	.write_room		= mos7720_write_room,
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index b42bad85097a..88828b4b8c44 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -1931,27 +1931,20 @@ static int mos7840_get_lsr_info(struct tty_struct *tty,
  *      function to get information about serial port
  *****************************************************************************/
 
-static int mos7840_get_serial_info(struct moschip_port *mos7840_port,
-				   struct serial_struct __user *retinfo)
+static int mos7840_get_serial_info(struct tty_struct *tty,
+				   struct serial_struct *ss)
 {
-	struct serial_struct tmp;
-
-	if (mos7840_port == NULL)
-		return -1;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	tmp.type = PORT_16550A;
-	tmp.line = mos7840_port->port->minor;
-	tmp.port = mos7840_port->port->port_number;
-	tmp.irq = 0;
-	tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
-	tmp.baud_base = 9600;
-	tmp.close_delay = 5 * HZ;
-	tmp.closing_wait = 30 * HZ;
+	struct usb_serial_port *port = tty->driver_data;
+	struct moschip_port *mos7840_port = mos7840_get_port_private(port);
 
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
+	ss->type = PORT_16550A;
+	ss->line = mos7840_port->port->minor;
+	ss->port = mos7840_port->port->port_number;
+	ss->irq = 0;
+	ss->xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
+	ss->baud_base = 9600;
+	ss->close_delay = 5 * HZ;
+	ss->closing_wait = 30 * HZ;
 	return 0;
 }
 
@@ -1982,13 +1975,6 @@ static int mos7840_ioctl(struct tty_struct *tty,
 		dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__);
 		return mos7840_get_lsr_info(tty, argp);
 
-	case TIOCGSERIAL:
-		dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__);
-		return mos7840_get_serial_info(mos7840_port, argp);
-
-	case TIOCSSERIAL:
-		dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__);
-		break;
 	default:
 		break;
 	}
@@ -2376,6 +2362,7 @@ static struct usb_serial_driver moschip7840_4port_device = {
 	.calc_num_ports = mos7840_calc_num_ports,
 	.probe = mos7840_probe,
 	.ioctl = mos7840_ioctl,
+	.get_serial = mos7840_get_serial_info,
 	.set_termios = mos7840_set_termios,
 	.break_ctl = mos7840_break,
 	.tiocmget = mos7840_tiocmget,
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index caa0746326fd..cb7aac9cd9e7 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -328,42 +328,23 @@ static int opticon_tiocmset(struct tty_struct *tty,
 	return 0;
 }
 
-static int get_serial_info(struct usb_serial_port *port,
-			   struct serial_struct __user *serial)
+static int get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
-	struct serial_struct tmp;
-
-	memset(&tmp, 0x00, sizeof(tmp));
+	struct usb_serial_port *port = tty->driver_data;
 
 	/* fake emulate a 16550 uart to make userspace code happy */
-	tmp.type		= PORT_16550A;
-	tmp.line		= port->minor;
-	tmp.port		= 0;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= 1024;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= 30*HZ;
-
-	if (copy_to_user(serial, &tmp, sizeof(*serial)))
-		return -EFAULT;
+	ss->type		= PORT_16550A;
+	ss->line		= port->minor;
+	ss->port		= 0;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= 1024;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= 30*HZ;
 	return 0;
 }
 
-static int opticon_ioctl(struct tty_struct *tty,
-			 unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(port,
-				       (struct serial_struct __user *)arg);
-	}
-
-	return -ENOIOCTLCMD;
-}
-
 static int opticon_port_probe(struct usb_serial_port *port)
 {
 	struct opticon_private *priv;
@@ -404,7 +385,7 @@ static struct usb_serial_driver opticon_device = {
 	.write_room = 		opticon_write_room,
 	.throttle =		usb_serial_generic_throttle,
 	.unthrottle =		usb_serial_generic_unthrottle,
-	.ioctl =		opticon_ioctl,
+	.get_serial =		get_serial_info,
 	.tiocmget =		opticon_tiocmget,
 	.tiocmset =		opticon_tiocmset,
 	.process_read_urb =	opticon_process_read_urb,
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index e72ad9f81c73..e24ff16d4147 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1966,7 +1966,8 @@ static struct usb_serial_driver option_1port_device = {
 	.chars_in_buffer   = usb_wwan_chars_in_buffer,
 	.tiocmget          = usb_wwan_tiocmget,
 	.tiocmset          = usb_wwan_tiocmset,
-	.ioctl             = usb_wwan_ioctl,
+	.get_serial        = usb_wwan_get_serial_info,
+	.set_serial        = usb_wwan_set_serial_info,
 	.attach            = option_attach,
 	.release           = option_release,
 	.port_probe        = usb_wwan_port_probe,
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index e41f725ac7aa..a4e0d13fc121 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -808,29 +808,16 @@ static int pl2303_carrier_raised(struct usb_serial_port *port)
 	return 0;
 }
 
-static int pl2303_ioctl(struct tty_struct *tty,
-			unsigned int cmd, unsigned long arg)
+static int pl2303_get_serial(struct tty_struct *tty,
+			struct serial_struct *ss)
 {
-	struct serial_struct ser;
 	struct usb_serial_port *port = tty->driver_data;
 
-	switch (cmd) {
-	case TIOCGSERIAL:
-		memset(&ser, 0, sizeof ser);
-		ser.type = PORT_16654;
-		ser.line = port->minor;
-		ser.port = port->port_number;
-		ser.baud_base = 460800;
-
-		if (copy_to_user((void __user *)arg, &ser, sizeof ser))
-			return -EFAULT;
-
-		return 0;
-	default:
-		break;
-	}
-
-	return -ENOIOCTLCMD;
+	ss->type = PORT_16654;
+	ss->line = port->minor;
+	ss->port = port->port_number;
+	ss->baud_base = 460800;
+	return 0;
 }
 
 static void pl2303_set_break(struct usb_serial_port *port, bool enable)
@@ -1016,7 +1003,7 @@ static struct usb_serial_driver pl2303_device = {
 	.close =		pl2303_close,
 	.dtr_rts =		pl2303_dtr_rts,
 	.carrier_raised =	pl2303_carrier_raised,
-	.ioctl =		pl2303_ioctl,
+	.get_serial =		pl2303_get_serial,
 	.break_ctl =		pl2303_break_ctl,
 	.set_termios =		pl2303_set_termios,
 	.tiocmget =		pl2303_tiocmget,
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index b61c2a9b6b11..f2fbe1ec9701 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -453,39 +453,19 @@ static void qt2_disconnect(struct usb_serial *serial)
 	usb_kill_urb(serial_priv->read_urb);
 }
 
-static int get_serial_info(struct usb_serial_port *port,
-			   struct serial_struct __user *retinfo)
-{
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.line		= port->minor;
-	tmp.port		= 0;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= port->bulk_out_size;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= 30*HZ;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-	return 0;
-}
-
-static int qt2_ioctl(struct tty_struct *tty,
-		     unsigned int cmd, unsigned long arg)
+static int get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
 	struct usb_serial_port *port = tty->driver_data;
 
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(port,
-				       (struct serial_struct __user *)arg);
-	default:
-		break;
-	}
-
-	return -ENOIOCTLCMD;
+	ss->line		= port->minor;
+	ss->port		= 0;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= port->bulk_out_size;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= 30*HZ;
+	return 0;
 }
 
 static void qt2_process_status(struct usb_serial_port *port, unsigned char *ch)
@@ -1013,7 +993,7 @@ static struct usb_serial_driver qt2_device = {
 	.tiocmset            = qt2_tiocmset,
 	.tiocmiwait          = usb_serial_generic_tiocmiwait,
 	.get_icount	     = usb_serial_generic_get_icount,
-	.ioctl               = qt2_ioctl,
+	.get_serial          = get_serial_info,
 	.set_termios         = qt2_set_termios,
 };
 
diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 0900b47b5f57..f6aea9f1be1a 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -331,39 +331,19 @@ static int ssu100_open(struct tty_struct *tty, struct usb_serial_port *port)
 	return usb_serial_generic_open(tty, port);
 }
 
-static int get_serial_info(struct usb_serial_port *port,
-			   struct serial_struct __user *retinfo)
-{
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.line		= port->minor;
-	tmp.port		= 0;
-	tmp.irq			= 0;
-	tmp.xmit_fifo_size	= port->bulk_out_size;
-	tmp.baud_base		= 9600;
-	tmp.close_delay		= 5*HZ;
-	tmp.closing_wait	= 30*HZ;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-	return 0;
-}
-
-static int ssu100_ioctl(struct tty_struct *tty,
-		    unsigned int cmd, unsigned long arg)
+static int get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
 	struct usb_serial_port *port = tty->driver_data;
 
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(port,
-				       (struct serial_struct __user *) arg);
-	default:
-		break;
-	}
-
-	return -ENOIOCTLCMD;
+	ss->line		= port->minor;
+	ss->port		= 0;
+	ss->irq			= 0;
+	ss->xmit_fifo_size	= port->bulk_out_size;
+	ss->baud_base		= 9600;
+	ss->close_delay		= 5*HZ;
+	ss->closing_wait	= 30*HZ;
+	return 0;
 }
 
 static int ssu100_attach(struct usb_serial *serial)
@@ -566,7 +546,7 @@ static struct usb_serial_driver ssu100_device = {
 	.tiocmset            = ssu100_tiocmset,
 	.tiocmiwait          = usb_serial_generic_tiocmiwait,
 	.get_icount	     = usb_serial_generic_get_icount,
-	.ioctl               = ssu100_ioctl,
+	.get_serial          = get_serial_info,
 	.set_termios         = ssu100_set_termios,
 };
 
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index e3c5832337e0..dd0ad67aa71e 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -313,8 +313,6 @@ static int ti_chars_in_buffer(struct tty_struct *tty);
 static bool ti_tx_empty(struct usb_serial_port *port);
 static void ti_throttle(struct tty_struct *tty);
 static void ti_unthrottle(struct tty_struct *tty);
-static int ti_ioctl(struct tty_struct *tty,
-		unsigned int cmd, unsigned long arg);
 static void ti_set_termios(struct tty_struct *tty,
 		struct usb_serial_port *port, struct ktermios *old_termios);
 static int ti_tiocmget(struct tty_struct *tty);
@@ -330,10 +328,10 @@ static void ti_recv(struct usb_serial_port *port, unsigned char *data,
 static void ti_send(struct ti_port *tport);
 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
-static int ti_get_serial_info(struct ti_port *tport,
-	struct serial_struct __user *ret_arg);
-static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
-	struct serial_struct __user *new_arg);
+static int ti_get_serial_info(struct tty_struct *tty,
+	struct serial_struct *ss);
+static int ti_set_serial_info(struct tty_struct *tty,
+	struct serial_struct *ss);
 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
 
 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
@@ -436,7 +434,8 @@ static struct usb_serial_driver ti_1port_device = {
 	.tx_empty		= ti_tx_empty,
 	.throttle		= ti_throttle,
 	.unthrottle		= ti_unthrottle,
-	.ioctl			= ti_ioctl,
+	.get_serial		= ti_get_serial_info,
+	.set_serial		= ti_set_serial_info,
 	.set_termios		= ti_set_termios,
 	.tiocmget		= ti_tiocmget,
 	.tiocmset		= ti_tiocmset,
@@ -469,7 +468,8 @@ static struct usb_serial_driver ti_2port_device = {
 	.tx_empty		= ti_tx_empty,
 	.throttle		= ti_throttle,
 	.unthrottle		= ti_unthrottle,
-	.ioctl			= ti_ioctl,
+	.get_serial		= ti_get_serial_info,
+	.set_serial		= ti_set_serial_info,
 	.set_termios		= ti_set_termios,
 	.tiocmget		= ti_tiocmget,
 	.tiocmset		= ti_tiocmset,
@@ -902,24 +902,6 @@ static void ti_unthrottle(struct tty_struct *tty)
 	}
 }
 
-static int ti_ioctl(struct tty_struct *tty,
-	unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct ti_port *tport = usb_get_serial_port_data(port);
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return ti_get_serial_info(tport,
-				(struct serial_struct __user *)arg);
-	case TIOCSSERIAL:
-		return ti_set_serial_info(tty, tport,
-				(struct serial_struct __user *)arg);
-	}
-	return -ENOIOCTLCMD;
-}
-
-
 static void ti_set_termios(struct tty_struct *tty,
 		struct usb_serial_port *port, struct ktermios *old_termios)
 {
@@ -1417,45 +1399,37 @@ free_data:
 }
 
 
-static int ti_get_serial_info(struct ti_port *tport,
-	struct serial_struct __user *ret_arg)
+static int ti_get_serial_info(struct tty_struct *tty,
+	struct serial_struct *ss)
 {
-	struct usb_serial_port *port = tport->tp_port;
-	struct serial_struct ret_serial;
+	struct usb_serial_port *port = tty->driver_data;
+	struct ti_port *tport = usb_get_serial_port_data(port);
 	unsigned cwait;
 
 	cwait = port->port.closing_wait;
 	if (cwait != ASYNC_CLOSING_WAIT_NONE)
 		cwait = jiffies_to_msecs(cwait) / 10;
 
-	memset(&ret_serial, 0, sizeof(ret_serial));
-
-	ret_serial.type = PORT_16550A;
-	ret_serial.line = port->minor;
-	ret_serial.port = port->port_number;
-	ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
-	ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
-	ret_serial.closing_wait = cwait;
-
-	if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
-		return -EFAULT;
-
+	ss->type = PORT_16550A;
+	ss->line = port->minor;
+	ss->port = port->port_number;
+	ss->xmit_fifo_size = kfifo_size(&port->write_fifo);
+	ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
+	ss->closing_wait = cwait;
 	return 0;
 }
 
 
-static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
-	struct serial_struct __user *new_arg)
+static int ti_set_serial_info(struct tty_struct *tty,
+	struct serial_struct *ss)
 {
-	struct serial_struct new_serial;
+	struct usb_serial_port *port = tty->driver_data;
+	struct ti_port *tport = usb_get_serial_port_data(port);
 	unsigned cwait;
 
-	if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
-		return -EFAULT;
-
-	cwait = new_serial.closing_wait;
+	cwait = ss->closing_wait;
 	if (cwait != ASYNC_CLOSING_WAIT_NONE)
-		cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
+		cwait = msecs_to_jiffies(10 * ss->closing_wait);
 
 	tport->tp_port->port.closing_wait = cwait;
 
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index f7aaa7f079e1..7e89efbf2c28 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -396,6 +396,24 @@ static void serial_unthrottle(struct tty_struct *tty)
 		port->serial->type->unthrottle(tty);
 }
 
+static int serial_get_serial(struct tty_struct *tty, struct serial_struct *ss)
+{
+	struct usb_serial_port *port = tty->driver_data;
+
+	if (port->serial->type->get_serial)
+		return port->serial->type->get_serial(tty, ss);
+	return -ENOTTY;
+}
+
+static int serial_set_serial(struct tty_struct *tty, struct serial_struct *ss)
+{
+	struct usb_serial_port *port = tty->driver_data;
+
+	if (port->serial->type->set_serial)
+		return port->serial->type->set_serial(tty, ss);
+	return -ENOTTY;
+}
+
 static int serial_ioctl(struct tty_struct *tty,
 					unsigned int cmd, unsigned long arg)
 {
@@ -1177,6 +1195,8 @@ static const struct tty_operations serial_ops = {
 	.tiocmget =		serial_tiocmget,
 	.tiocmset =		serial_tiocmset,
 	.get_icount =		serial_get_icount,
+	.set_serial =		serial_set_serial,
+	.get_serial =		serial_get_serial,
 	.cleanup =		serial_cleanup,
 	.install =		serial_install,
 	.proc_show =		serial_proc_show,
diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h
index d28dab4b9eff..1c120eaf4091 100644
--- a/drivers/usb/serial/usb-wwan.h
+++ b/drivers/usb/serial/usb-wwan.h
@@ -15,8 +15,10 @@ extern int usb_wwan_write_room(struct tty_struct *tty);
 extern int usb_wwan_tiocmget(struct tty_struct *tty);
 extern int usb_wwan_tiocmset(struct tty_struct *tty,
 			     unsigned int set, unsigned int clear);
-extern int usb_wwan_ioctl(struct tty_struct *tty,
-			  unsigned int cmd, unsigned long arg);
+extern int usb_wwan_get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss);
+extern int usb_wwan_set_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss);
 extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 			  const unsigned char *buf, int count);
 extern int usb_wwan_chars_in_buffer(struct tty_struct *tty);
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index 912472f26e4f..7e855c87e4f7 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -132,38 +132,32 @@ int usb_wwan_tiocmset(struct tty_struct *tty,
 }
 EXPORT_SYMBOL(usb_wwan_tiocmset);
 
-static int get_serial_info(struct usb_serial_port *port,
-			   struct serial_struct __user *retinfo)
+int usb_wwan_get_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
-	struct serial_struct tmp;
-
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.line            = port->minor;
-	tmp.port            = port->port_number;
-	tmp.baud_base       = tty_get_baud_rate(port->port.tty);
-	tmp.close_delay	    = port->port.close_delay / 10;
-	tmp.closing_wait    = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+	struct usb_serial_port *port = tty->driver_data;
+
+	ss->line            = port->minor;
+	ss->port            = port->port_number;
+	ss->baud_base       = tty_get_baud_rate(port->port.tty);
+	ss->close_delay	    = port->port.close_delay / 10;
+	ss->closing_wait    = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
 				 ASYNC_CLOSING_WAIT_NONE :
 				 port->port.closing_wait / 10;
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
 	return 0;
 }
+EXPORT_SYMBOL(usb_wwan_get_serial_info);
 
-static int set_serial_info(struct usb_serial_port *port,
-			   struct serial_struct __user *newinfo)
+int usb_wwan_set_serial_info(struct tty_struct *tty,
+			   struct serial_struct *ss)
 {
-	struct serial_struct new_serial;
+	struct usb_serial_port *port = tty->driver_data;
 	unsigned int closing_wait, close_delay;
 	int retval = 0;
 
-	if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
-		return -EFAULT;
-
-	close_delay = new_serial.close_delay * 10;
-	closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
-			ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+	close_delay = ss->close_delay * 10;
+	closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+			ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10;
 
 	mutex_lock(&port->port.mutex);
 
@@ -181,30 +175,7 @@ static int set_serial_info(struct usb_serial_port *port,
 	mutex_unlock(&port->port.mutex);
 	return retval;
 }
-
-int usb_wwan_ioctl(struct tty_struct *tty,
-		   unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-
-	dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd);
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		return get_serial_info(port,
-				       (struct serial_struct __user *) arg);
-	case TIOCSSERIAL:
-		return set_serial_info(port,
-				       (struct serial_struct __user *) arg);
-	default:
-		break;
-	}
-
-	dev_dbg(&port->dev, "%s arg not supported\n", __func__);
-
-	return -ENOIOCTLCMD;
-}
-EXPORT_SYMBOL(usb_wwan_ioctl);
+EXPORT_SYMBOL(usb_wwan_set_serial_info);
 
 int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
 		   const unsigned char *buf, int count)
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 1c7b46a8620c..aefd84f88b59 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -83,8 +83,8 @@ static int  whiteheat_port_remove(struct usb_serial_port *port);
 static int  whiteheat_open(struct tty_struct *tty,
 			struct usb_serial_port *port);
 static void whiteheat_close(struct usb_serial_port *port);
-static int  whiteheat_ioctl(struct tty_struct *tty,
-			unsigned int cmd, unsigned long arg);
+static int  whiteheat_get_serial(struct tty_struct *tty,
+			struct serial_struct *ss);
 static void whiteheat_set_termios(struct tty_struct *tty,
 			struct usb_serial_port *port, struct ktermios *old);
 static int  whiteheat_tiocmget(struct tty_struct *tty);
@@ -120,7 +120,7 @@ static struct usb_serial_driver whiteheat_device = {
 	.port_remove =		whiteheat_port_remove,
 	.open =			whiteheat_open,
 	.close =		whiteheat_close,
-	.ioctl =		whiteheat_ioctl,
+	.get_serial =		whiteheat_get_serial,
 	.set_termios =		whiteheat_set_termios,
 	.break_ctl =		whiteheat_break_ctl,
 	.tiocmget =		whiteheat_tiocmget,
@@ -442,33 +442,21 @@ static int whiteheat_tiocmset(struct tty_struct *tty,
 }
 
 
-static int whiteheat_ioctl(struct tty_struct *tty,
-					unsigned int cmd, unsigned long arg)
+static int whiteheat_get_serial(struct tty_struct *tty,
+				struct serial_struct *ss)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	struct serial_struct serstruct;
-	void __user *user_arg = (void __user *)arg;
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		memset(&serstruct, 0, sizeof(serstruct));
-		serstruct.type = PORT_16654;
-		serstruct.line = port->minor;
-		serstruct.port = port->port_number;
-		serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo);
-		serstruct.custom_divisor = 0;
-		serstruct.baud_base = 460800;
-		serstruct.close_delay = CLOSING_DELAY;
-		serstruct.closing_wait = CLOSING_DELAY;
-
-		if (copy_to_user(user_arg, &serstruct, sizeof(serstruct)))
-			return -EFAULT;
-		break;
-	default:
-		break;
-	}
 
-	return -ENOIOCTLCMD;
+	ss->type = PORT_16654;
+	ss->line = port->minor;
+	ss->port = port->port_number;
+	ss->xmit_fifo_size = kfifo_size(&port->write_fifo);
+	ss->custom_divisor = 0;
+	ss->baud_base = 460800;
+	ss->close_delay = CLOSING_DELAY;
+	ss->closing_wait = CLOSING_DELAY;
+
+	return 0;
 }