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path: root/drivers/usb/serial/mos7720.c
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Diffstat (limited to 'drivers/usb/serial/mos7720.c')
-rw-r--r--drivers/usb/serial/mos7720.c61
1 files changed, 26 insertions, 35 deletions
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index e02c198016b0..40f3a0188807 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -564,22 +564,25 @@ static void mos7720_close(struct usb_serial_port *port, struct file *filp)
}
/* While closing port, shutdown all bulk read, write *
- * and interrupt read if they exists */
- if (serial->dev) {
- dbg("Shutdown bulk write");
- usb_kill_urb(port->write_urb);
- dbg("Shutdown bulk read");
- usb_kill_urb(port->read_urb);
+ * and interrupt read if they exists, otherwise nop */
+ dbg("Shutdown bulk write");
+ usb_kill_urb(port->write_urb);
+ dbg("Shutdown bulk read");
+ usb_kill_urb(port->read_urb);
+
+ mutex_lock(&serial->disc_mutex);
+ /* these commands must not be issued if the device has
+ * been disconnected */
+ if (!serial->disconnected) {
+ data = 0x00;
+ send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
+ 0x04, &data);
+
+ data = 0x00;
+ send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
+ 0x01, &data);
}
-
- data = 0x00;
- send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
- 0x04, &data);
-
- data = 0x00;
- send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
- 0x01, &data);
-
+ mutex_unlock(&serial->disc_mutex);
mos7720_port->open = 0;
dbg("Leaving %s", __FUNCTION__);
@@ -1040,11 +1043,6 @@ static void change_port_settings(struct moschip_port *mos7720_port,
tty = mos7720_port->port->tty;
- if ((!tty) || (!tty->termios)) {
- dbg("%s - no tty structures", __FUNCTION__);
- return;
- }
-
dbg("%s: Entering ..........", __FUNCTION__);
lData = UART_LCR_WLEN8;
@@ -1175,7 +1173,10 @@ static void change_port_settings(struct moschip_port *mos7720_port,
dbg("%s - baud rate = %d", __FUNCTION__, baud);
status = send_cmd_write_baud_rate(mos7720_port, baud);
-
+ /* FIXME: needs to write actual resulting baud back not just
+ blindly do so */
+ if (cflag & CBAUD)
+ tty_encode_baud_rate(tty, baud, baud);
/* Enable Interrupts */
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data);
@@ -1214,10 +1215,6 @@ static void mos7720_set_termios(struct usb_serial_port *port,
tty = port->tty;
- if (!port->tty || !port->tty->termios) {
- dbg("%s - no tty or termios", __FUNCTION__);
- return;
- }
if (!mos7720_port->open) {
dbg("%s - port not opened", __FUNCTION__);
@@ -1228,19 +1225,13 @@ static void mos7720_set_termios(struct usb_serial_port *port,
cflag = tty->termios->c_cflag;
- if (!cflag) {
- printk("%s %s\n",__FUNCTION__,"cflag is NULL");
- return;
- }
-
- dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
+ dbg("%s - cflag %08x iflag %08x", __FUNCTION__,
tty->termios->c_cflag,
RELEVANT_IFLAG(tty->termios->c_iflag));
- if (old_termios)
- dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
- old_termios->c_cflag,
- RELEVANT_IFLAG(old_termios->c_iflag));
+ dbg("%s - old cflag %08x old iflag %08x", __FUNCTION__,
+ old_termios->c_cflag,
+ RELEVANT_IFLAG(old_termios->c_iflag));
dbg("%s - port %d", __FUNCTION__, port->number);