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path: root/drivers/usb/serial/quatech2.c
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Diffstat (limited to 'drivers/usb/serial/quatech2.c')
-rw-r--r--drivers/usb/serial/quatech2.c47
1 files changed, 14 insertions, 33 deletions
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index d152be97d041..00e6c9bac8a3 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -609,7 +609,6 @@ void qt2_process_read_urb(struct urb *urb)
struct qt2_serial_private *serial_priv;
struct usb_serial_port *port;
struct qt2_port_private *port_priv;
- struct tty_struct *tty;
bool escapeflag;
unsigned char *ch;
int i;
@@ -620,15 +619,11 @@ void qt2_process_read_urb(struct urb *urb)
return;
ch = urb->transfer_buffer;
- tty = NULL;
serial = urb->context;
serial_priv = usb_get_serial_data(serial);
port = serial->port[serial_priv->current_port];
port_priv = usb_get_serial_port_data(port);
- if (port_priv->is_open)
- tty = tty_port_tty_get(&port->port);
-
for (i = 0; i < urb->actual_length; i++) {
ch = (unsigned char *)urb->transfer_buffer + i;
if ((i <= (len - 3)) &&
@@ -666,10 +661,7 @@ void qt2_process_read_urb(struct urb *urb)
__func__);
break;
}
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(&port->port);
newport = *(ch + 3);
@@ -683,10 +675,6 @@ void qt2_process_read_urb(struct urb *urb)
serial_priv->current_port = newport;
port = serial->port[serial_priv->current_port];
port_priv = usb_get_serial_port_data(port);
- if (port_priv->is_open)
- tty = tty_port_tty_get(&port->port);
- else
- tty = NULL;
i += 3;
escapeflag = true;
break;
@@ -697,8 +685,8 @@ void qt2_process_read_urb(struct urb *urb)
escapeflag = true;
break;
case QT2_CONTROL_ESCAPE:
- tty_buffer_request_room(tty, 2);
- tty_insert_flip_string(tty, ch, 2);
+ tty_buffer_request_room(&port->port, 2);
+ tty_insert_flip_string(&port->port, ch, 2);
i += 2;
escapeflag = true;
break;
@@ -712,16 +700,11 @@ void qt2_process_read_urb(struct urb *urb)
continue;
}
- if (tty) {
- tty_buffer_request_room(tty, 1);
- tty_insert_flip_string(tty, ch, 1);
- }
+ tty_buffer_request_room(&port->port, 1);
+ tty_insert_flip_string(&port->port, ch, 1);
}
- if (tty) {
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_flip_buffer_push(&port->port);
}
static void qt2_write_bulk_callback(struct urb *urb)
@@ -945,19 +928,17 @@ static void qt2_dtr_rts(struct usb_serial_port *port, int on)
struct usb_device *dev = port->serial->dev;
struct qt2_port_private *port_priv = usb_get_serial_port_data(port);
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected) {
- /* Disable flow control */
- if (!on && qt2_setregister(dev, port_priv->device_port,
+ /* Disable flow control */
+ if (!on) {
+ if (qt2_setregister(dev, port_priv->device_port,
UART_MCR, 0) < 0)
dev_warn(&port->dev, "error from flowcontrol urb\n");
- /* drop RTS and DTR */
- if (on)
- update_mctrl(port_priv, TIOCM_DTR | TIOCM_RTS, 0);
- else
- update_mctrl(port_priv, 0, TIOCM_DTR | TIOCM_RTS);
}
- mutex_unlock(&port->serial->disc_mutex);
+ /* drop RTS and DTR */
+ if (on)
+ update_mctrl(port_priv, TIOCM_DTR | TIOCM_RTS, 0);
+ else
+ update_mctrl(port_priv, 0, TIOCM_DTR | TIOCM_RTS);
}
static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch)