USB: last abuses of intfdata in close for usb-serial drivers

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

diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index ae410c4678ea697abe9f62a435a5aca73f87490e..5f9c6e46bee5712effaed0346d7ae5a31e305d60 100644 (file)
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -1405,19 +1405,19 @@ static void digi_close(struct usb_serial_port *port, struct file *filp)
        unsigned char buf[32];
        struct tty_struct *tty = port->tty;
        struct digi_port *priv = usb_get_serial_port_data(port);
-       unsigned long flags = 0;
 
        dbg("digi_close: TOP: port=%d, open_count=%d",
                priv->dp_port_num, port->open_count);
 
+       mutex_lock(&port->serial->disc_mutex);
        /* if disconnected, just clear flags */
-       if (!usb_get_intfdata(port->serial->interface))
+       if (port->serial->disconnected)
                goto exit;
 
        /* do cleanup only after final close on this port */
-       spin_lock_irqsave(&priv->dp_port_lock, flags);
+       spin_lock_irq(&priv->dp_port_lock);
        priv->dp_in_close = 1;
-       spin_unlock_irqrestore(&priv->dp_port_lock, flags);
+       spin_unlock_irq(&priv->dp_port_lock);
 
        /* tell line discipline to process only XON/XOFF */
        tty->closing = 1;
@@ -1482,11 +1482,12 @@ static void digi_close(struct usb_serial_port *port, struct file *filp)
        }
        tty->closing = 0;
 exit:
-       spin_lock_irqsave(&priv->dp_port_lock, flags);
+       spin_lock_irq(&priv->dp_port_lock);
        priv->dp_write_urb_in_use = 0;
        priv->dp_in_close = 0;
        wake_up_interruptible(&priv->dp_close_wait);
-       spin_unlock_irqrestore(&priv->dp_port_lock, flags);
+       spin_unlock_irq(&priv->dp_port_lock);
+       mutex_unlock(&port->serial->disc_mutex);
        dbg("digi_close: done");
 }