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
  ...

1 files changed, 17 insertions, 46 deletions

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)