tiocmget: kill off the passing of the struct file

We don't actually need this and it causes problems for internal use of
this functionality. Currently there is a single use of the FILE * pointer.
That is the serial core which uses it to check tty_hung_up_p. However if
that is true then IO_ERROR is also already set so the check may be removed.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index b68b96f..4d26d39 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -245,7 +245,7 @@
  *	Map the signal state into Linux modem flags and report the value
  *	in Linux terms
  */
-static int ifx_spi_tiocmget(struct tty_struct *tty, struct file *filp)
+static int ifx_spi_tiocmget(struct tty_struct *tty)
 {
 	unsigned int value;
 	struct ifx_spi_device *ifx_dev = tty->driver_data;