tty: usb-serial krefs

[linux-2.6-omap-h63xx.git] / drivers / usb / serial / aircable.c

diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index 79ea98c66fa8d8c1f91ef2b045e9fc19d52375de..99fb7dc59c4540911b01a2cd72662dbcd54cf113 100644 (file)
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -272,7 +272,7 @@ static void aircable_read(struct work_struct *work)
         * 64 bytes, to ensure I do not get throttled.
         * Ask USB mailing list for better aproach.
         */
-       tty = port->port.tty;
+       tty = tty_port_tty_get(&port->port);
 
        if (!tty) {
                schedule_work(&priv->rx_work);
@@ -283,12 +283,13 @@ static void aircable_read(struct work_struct *work)
        count = min(64, serial_buf_data_avail(priv->rx_buf));
 
        if (count <= 0)
-               return; /* We have finished sending everything. */
+               goto out; /* We have finished sending everything. */
 
        tty_prepare_flip_string(tty, &data, count);
        if (!data) {
-               err("%s- kzalloc(%d) failed.", __func__, count);
-               return;
+               dev_err(&port->dev, "%s- kzalloc(%d) failed.",
+                                                       __func__, count);
+               goto out;
        }
 
        serial_buf_get(priv->rx_buf, data, count);
@@ -297,7 +298,8 @@ static void aircable_read(struct work_struct *work)
 
        if (serial_buf_data_avail(priv->rx_buf))
                schedule_work(&priv->rx_work);
-
+out:           
+       tty_kref_put(tty);
        return;
 }
 /* End of private methods */
@@ -495,7 +497,7 @@ static void aircable_read_bulk_callback(struct urb *urb)
        usb_serial_debug_data(debug, &port->dev, __func__,
                                urb->actual_length, urb->transfer_buffer);
 
-       tty = port->port.tty;
+       tty = tty_port_tty_get(&port->port);
        if (tty && urb->actual_length) {
                if (urb->actual_length <= 2) {
                        /* This is an incomplete package */
@@ -527,6 +529,7 @@ static void aircable_read_bulk_callback(struct urb *urb)
                }
                aircable_read(&priv->rx_work);
        }
+       tty_kref_put(tty);
 
        /* Schedule the next read _if_ we are still open */
        if (port->port.count) {