Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...

[cascardo/linux.git] / drivers / usb / serial / keyspan.c

diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 6bfdba6..7c069a0 100644 (file)
--- 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*/
@@ -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) {