USB: pl2303: add custom tiocmiwait operation

Break out TIOCMIWAIT handling from custom ioctl operation and use
tiocmiwait operation field instead.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index e7e407b67994..1f7fd1aaa2f5 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -593,8 +593,9 @@ static int pl2303_carrier_raised(struct usb_serial_port *port)
         return 0;
 }
 
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
+static int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg)
 {
+        struct usb_serial_port *port = tty->driver_data;
         struct pl2303_private *priv = usb_get_serial_port_data(port);
         unsigned long flags;
         unsigned int prevstatus;
@@ -652,10 +653,6 @@ static int pl2303_ioctl(struct tty_struct *tty,
                         return -EFAULT;
 
                 return 0;
-
-        case TIOCMIWAIT:
-                dev_dbg(&port->dev, "%s TIOCMIWAIT\n", __func__);
-                return wait_modem_info(port, arg);
         default:
                 dev_dbg(&port->dev, "%s not supported = 0x%04x\n", __func__, cmd);
                 break;
@@ -836,6 +833,7 @@ static struct usb_serial_driver pl2303_device = {
         .set_termios =          pl2303_set_termios,
         .tiocmget =             pl2303_tiocmget,
         .tiocmset =             pl2303_tiocmset,
+        .tiocmiwait =           pl2303_tiocmiwait,
         .process_read_urb =     pl2303_process_read_urb,
         .read_int_callback =    pl2303_read_int_callback,
         .attach =               pl2303_startup,