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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2007-07-09 12:03:10 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-12 16:34:41 -0700
commit31473aae5afb11f0c5217dafdbc9df8a470071aa (patch)
tree13d533cf73884c41ea7258b6d4a213d4d2aef2c2 /drivers/usb/serial/mos7840.c
parent70f458f668aa09cc45384728dec434f2975a3947 (diff)
USB: mos7840.c: turn this into a serial driver
The MOS driver is "interesting", in a bad kind of 'how the hell did this get merged' kind of way - Remove the bogus termios change check - Remove the duplicate code for half the ioctls - Remove the supporting code to duplicate the ioctl code Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
-rw-r--r--drivers/usb/serial/mos7840.c72
1 files changed, 0 insertions, 72 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index a6678826452..37f41f576d3 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -2189,16 +2189,6 @@ static void mos7840_set_termios(struct usb_serial_port *port,
return;
}
- /* check that they really want us to change something */
- if (old_termios) {
- if ((cflag == old_termios->c_cflag) &&
- (RELEVANT_IFLAG(tty->termios->c_iflag) ==
- RELEVANT_IFLAG(old_termios->c_iflag))) {
- dbg("%s\n", "Nothing to change");
- return;
- }
- }
-
dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag));
@@ -2258,30 +2248,6 @@ static int mos7840_get_lsr_info(struct moschip_port *mos7840_port,
}
/*****************************************************************************
- * mos7840_get_bytes_avail - get number of bytes available
- *
- * Purpose: Let user call ioctl to get the count of number of bytes available.
- *****************************************************************************/
-
-static int mos7840_get_bytes_avail(struct moschip_port *mos7840_port,
- unsigned int __user *value)
-{
- unsigned int result = 0;
- struct tty_struct *tty = mos7840_port->port->tty;
-
- if (!tty)
- return -ENOIOCTLCMD;
-
- result = tty->read_cnt;
-
- dbg("%s(%d) = %d", __FUNCTION__, mos7840_port->port->number, result);
- if (copy_to_user(value, &result, sizeof(int)))
- return -EFAULT;
-
- return -ENOIOCTLCMD;
-}
-
-/*****************************************************************************
* mos7840_set_modem_info
* function to set modem info
*****************************************************************************/
@@ -2429,8 +2395,6 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
struct async_icount cprev;
struct serial_icounter_struct icount;
int mosret = 0;
- int retval;
- struct tty_ldisc *ld;
if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
dbg("%s", "Invalid port \n");
@@ -2449,42 +2413,6 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
switch (cmd) {
/* return number of bytes available */
- case TIOCINQ:
- dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
- return mos7840_get_bytes_avail(mos7840_port, argp);
-
- case TIOCOUTQ:
- dbg("%s (%d) TIOCOUTQ", __FUNCTION__, port->number);
- return put_user(tty->driver->chars_in_buffer ?
- tty->driver->chars_in_buffer(tty) : 0,
- (int __user *)arg);
-
- case TCFLSH:
- retval = tty_check_change(tty);
- if (retval)
- return retval;
-
- ld = tty_ldisc_ref(tty);
- switch (arg) {
- case TCIFLUSH:
- if (ld && ld->flush_buffer)
- ld->flush_buffer(tty);
- break;
- case TCIOFLUSH:
- if (ld && ld->flush_buffer)
- ld->flush_buffer(tty);
- /* fall through */
- case TCOFLUSH:
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
- break;
- default:
- tty_ldisc_deref(ld);
- return -EINVAL;
- }
- tty_ldisc_deref(ld);
- return 0;
-
case TIOCSERGETLSR:
dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
return mos7840_get_lsr_info(mos7840_port, argp);