diff options
Diffstat (limited to 'drivers/usb/serial/keyspan.c')
| -rw-r--r-- | drivers/usb/serial/keyspan.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 6bfdba6a213..ea7bba69f4d 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -447,7 +447,7 @@ static void usa26_indat_callback(struct urb *urb) port = (struct usb_serial_port *) urb->context; tty = port->tty; - if (urb->actual_length) { + if (tty && urb->actual_length) { /* 0x80 bit is error flag */ if ((data[0] & 0x80) == 0) { /* no errors on individual bytes, only possible overrun err*/ @@ -838,7 +838,7 @@ static void usa49_indat_callback(struct urb *urb) port = (struct usb_serial_port *) urb->context; tty = port->tty; - if (urb->actual_length) { + if (tty && urb->actual_length) { /* 0x80 bit is error flag */ if ((data[0] & 0x80) == 0) { /* no error on any byte */ @@ -1227,8 +1227,8 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp) s_priv = usb_get_serial_data(serial); p_priv = usb_get_serial_port_data(port); d_details = p_priv->device_details; - - dbg("%s - port%d.", __FUNCTION__, port->number); + + dbg("%s - port%d.", __FUNCTION__, port->number); /* Set some sane defaults */ p_priv->rts_state = 1; @@ -1249,7 +1249,7 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp) urb->dev = serial->dev; /* make sure endpoint data toggle is synchronized with the device */ - + usb_clear_halt(urb->dev, urb->pipe); if ((err = usb_submit_urb(urb, GFP_KERNEL)) != 0) { @@ -1265,7 +1265,7 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp) /* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe), 0); */ } - /* get the terminal config for the setup message now so we don't + /* get the terminal config for the setup message now so we don't * need to send 2 of them */ cflag = port->tty->termios->c_cflag; @@ -1274,7 +1274,7 @@ static int keyspan_open (struct usb_serial_port *port, struct file *filp) /* Baud rate calculation takes baud rate as an integer so other rates can be generated if desired. */ baud_rate = tty_get_baud_rate(port->tty); - /* If no match or invalid, leave as default */ + /* If no match or invalid, leave as default */ if (baud_rate >= 0 && d_details->calculate_baud_rate(baud_rate, d_details->baudclk, NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) { |