USB: ftdi_sio: clean up get_modem_status

Use usb-serial port rather than tty as argument to get_modem_status.

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

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 242b5776648a..1159fd4cd94d 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -925,7 +925,7 @@ static int  ftdi_ioctl(struct tty_struct *tty,
                         unsigned int cmd, unsigned long arg);
 static void ftdi_break_ctl(struct tty_struct *tty, int break_state);
 static int ftdi_chars_in_buffer(struct tty_struct *tty);
-static int ftdi_get_modem_status(struct tty_struct *tty,
+static int ftdi_get_modem_status(struct usb_serial_port *port,
                                                 unsigned char status[2]);
 
 static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base);
@@ -2068,7 +2068,7 @@ static int ftdi_chars_in_buffer(struct tty_struct *tty)
                 goto out;
 
         /* Check if hardware buffer is empty. */
-        ret = ftdi_get_modem_status(tty, buf);
+        ret = ftdi_get_modem_status(port, buf);
         if (ret == 2) {
                 if (!(buf[1] & FTDI_RS_TEMT))
                         chars = 1;
@@ -2268,10 +2268,9 @@ no_c_cflag_changes:
  * Returns the number of status bytes retrieved (device dependant), or
  * negative error code.
  */
-static int ftdi_get_modem_status(struct tty_struct *tty,
+static int ftdi_get_modem_status(struct usb_serial_port *port,
                                                 unsigned char status[2])
 {
-        struct usb_serial_port *port = tty->driver_data;
         struct ftdi_private *priv = usb_get_serial_port_data(port);
         unsigned char *buf;
         int len;
@@ -2336,7 +2335,7 @@ static int ftdi_tiocmget(struct tty_struct *tty)
         unsigned char buf[2];
         int ret;
 
-        ret = ftdi_get_modem_status(tty, buf);
+        ret = ftdi_get_modem_status(port, buf);
         if (ret < 0)
                 return ret;