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path: root/drivers/usb/serial/ftdi_sio.c
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Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
-rw-r--r--drivers/usb/serial/ftdi_sio.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 3dc93b542b3..c2ac129557a 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -860,7 +860,7 @@ static int update_mctrl(struct usb_serial_port *port, unsigned int set,
kfree(buf);
if (rv < 0) {
- err("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
+ dbg("%s Error from MODEM_CTRL urb: DTR %s, RTS %s",
__func__,
(set & TIOCM_DTR) ? "HIGH" :
(clear & TIOCM_DTR) ? "LOW" : "unchanged",
@@ -1808,7 +1808,7 @@ static void ftdi_read_bulk_callback(struct urb *urb)
if (port->port.count <= 0)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
if (!tty) {
dbg("%s - bad tty pointer - exiting", __func__);
return;
@@ -1817,7 +1817,7 @@ static void ftdi_read_bulk_callback(struct urb *urb)
priv = usb_get_serial_port_data(port);
if (!priv) {
dbg("%s - bad port private data pointer - exiting", __func__);
- return;
+ goto out;
}
if (urb != port->read_urb)
@@ -1827,7 +1827,7 @@ static void ftdi_read_bulk_callback(struct urb *urb)
/* This will happen at close every time so it is a dbg not an
err */
dbg("(this is ok on close) nonzero read bulk status received: %d", status);
- return;
+ goto out;
}
/* count data bytes, but not status bytes */
@@ -1838,7 +1838,8 @@ static void ftdi_read_bulk_callback(struct urb *urb)
spin_unlock_irqrestore(&priv->rx_lock, flags);
ftdi_process_read(&priv->rx_work.work);
-
+out:
+ tty_kref_put(tty);
} /* ftdi_read_bulk_callback */
@@ -1863,7 +1864,7 @@ static void ftdi_process_read(struct work_struct *work)
if (port->port.count <= 0)
return;
- tty = port->port.tty;
+ tty = tty_port_tty_get(&port->port);
if (!tty) {
dbg("%s - bad tty pointer - exiting", __func__);
return;
@@ -1872,13 +1873,13 @@ static void ftdi_process_read(struct work_struct *work)
priv = usb_get_serial_port_data(port);
if (!priv) {
dbg("%s - bad port private data pointer - exiting", __func__);
- return;
+ goto out;
}
urb = port->read_urb;
if (!urb) {
dbg("%s - bad read_urb pointer - exiting", __func__);
- return;
+ goto out;
}
data = urb->transfer_buffer;
@@ -2020,7 +2021,7 @@ static void ftdi_process_read(struct work_struct *work)
schedule_delayed_work(&priv->rx_work, 1);
else
dbg("%s - port is closed", __func__);
- return;
+ goto out;
}
/* urb is completely processed */
@@ -2041,6 +2042,8 @@ static void ftdi_process_read(struct work_struct *work)
err("%s - failed resubmitting read urb, error %d",
__func__, result);
}
+out:
+ tty_kref_put(tty);
} /* ftdi_process_read */
@@ -2256,7 +2259,7 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
0, 0,
buf, 1, WDR_TIMEOUT);
if (ret < 0) {
- err("%s Could not get modem status of device - err: %d", __func__,
+ dbg("%s Could not get modem status of device - err: %d", __func__,
ret);
return ret;
}
@@ -2275,7 +2278,7 @@ static int ftdi_tiocmget(struct tty_struct *tty, struct file *file)
0, priv->interface,
buf, 2, WDR_TIMEOUT);
if (ret < 0) {
- err("%s Could not get modem status of device - err: %d", __func__,
+ dbg("%s Could not get modem status of device - err: %d", __func__,
ret);
return ret;
}