1 files changed, 15 insertions, 22 deletions

diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index b10ac8409411..4fd7af98b1ae 100644
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -43,6 +43,7 @@
  */
 
 #include <linux/tty.h>
+#include <linux/slab.h>
 #include <linux/tty_flip.h>
 #include <linux/circ_buf.h>
 #include <linux/usb.h>
@@ -78,7 +79,7 @@ static int debug;
 #define DRIVER_DESC "AIRcable USB Driver"
 
 /* ID table that will be registered with USB core */
-static struct usb_device_id id_table [] = {
+static const struct usb_device_id id_table[] = {
         { USB_DEVICE(AIRCABLE_VID, AIRCABLE_USB_PID) },
         { },
 };
@@ -468,10 +469,6 @@ static void aircable_read_bulk_callback(struct urb *urb)
 
         if (status) {
                 dbg("%s - urb status = %d", __func__, status);
-                if (!port->port.count) {
-                        dbg("%s - port is closed, exiting.", __func__);
-                        return;
-                }
                 if (status == -EPROTO) {
                         dbg("%s - caught -EPROTO, resubmitting the urb",
                             __func__);
@@ -530,23 +527,19 @@ static void aircable_read_bulk_callback(struct urb *urb)
         }
         tty_kref_put(tty);
 
-        /* Schedule the next read _if_ we are still open */
-        if (port->port.count) {
-                usb_fill_bulk_urb(port->read_urb, port->serial->dev,
-                                  usb_rcvbulkpipe(port->serial->dev,
-                                          port->bulk_in_endpointAddress),
-                                  port->read_urb->transfer_buffer,
-                                  port->read_urb->transfer_buffer_length,
-                                  aircable_read_bulk_callback, port);
-
-                result = usb_submit_urb(urb, GFP_ATOMIC);
-                if (result)
-                        dev_err(&urb->dev->dev,
-                                "%s - failed resubmitting read urb, error %d\n",
-                                __func__, result);
-        }
-
-        return;
+        /* Schedule the next read */
+        usb_fill_bulk_urb(port->read_urb, port->serial->dev,
+                          usb_rcvbulkpipe(port->serial->dev,
+                                  port->bulk_in_endpointAddress),
+                          port->read_urb->transfer_buffer,
+                          port->read_urb->transfer_buffer_length,
+                          aircable_read_bulk_callback, port);
+
+        result = usb_submit_urb(urb, GFP_ATOMIC);
+        if (result && result != -EPERM)
+                dev_err(&urb->dev->dev,
+                        "%s - failed resubmitting read urb, error %d\n",
+                        __func__, result);
 }
 
 /* Based on ftdi_sio.c throttle */