1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 8249fd8381fb..941c2d409f85 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -548,8 +548,12 @@ static void usb_serial_port_work(struct work_struct *work)
 
 static void kill_traffic(struct usb_serial_port *port)
 {
+        int i;
+
         usb_kill_urb(port->read_urb);
         usb_kill_urb(port->write_urb);
+        for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
+                usb_kill_urb(port->write_urbs[i]);
         /*
          * This is tricky.
          * Some drivers submit the read_urb in the
@@ -568,6 +572,7 @@ static void kill_traffic(struct usb_serial_port *port)
 static void port_release(struct device *dev)
 {
         struct usb_serial_port *port = to_usb_serial_port(dev);
+        int i;
 
         dbg ("%s - %s", __func__, dev_name(dev));
 
@@ -582,6 +587,10 @@ static void port_release(struct device *dev)
         usb_free_urb(port->write_urb);
         usb_free_urb(port->interrupt_in_urb);
         usb_free_urb(port->interrupt_out_urb);
+        for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) {
+                usb_free_urb(port->write_urbs[i]);
+                kfree(port->bulk_out_buffers[i]);
+        }
         kfifo_free(&port->write_fifo);
         kfree(port->bulk_in_buffer);
         kfree(port->bulk_out_buffer);
@@ -920,6 +929,8 @@ int usb_serial_probe(struct usb_interface *interface,
         }
 
         for (i = 0; i < num_bulk_out; ++i) {
+                int j;
+
                 endpoint = bulk_out_endpoint[i];
                 port = serial->port[i];
                 port->write_urb = usb_alloc_urb(0, GFP_KERNEL);
@@ -945,6 +956,28 @@ int usb_serial_probe(struct usb_interface *interface,
                                         endpoint->bEndpointAddress),
                                 port->bulk_out_buffer, buffer_size,
                                 serial->type->write_bulk_callback, port);
+                for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) {
+                        set_bit(j, &port->write_urbs_free);
+                        port->write_urbs[j] = usb_alloc_urb(0, GFP_KERNEL);
+                        if (!port->write_urbs[j]) {
+                                dev_err(&interface->dev,
+                                                "No free urbs available\n");
+                                goto probe_error;
+                        }
+                        port->bulk_out_buffers[j] = kmalloc(buffer_size,
+                                                                GFP_KERNEL);
+                        if (!port->bulk_out_buffers[j]) {
+                                dev_err(&interface->dev,
+                                        "Couldn't allocate bulk_out_buffer\n");
+                                goto probe_error;
+                        }
+                        usb_fill_bulk_urb(port->write_urbs[j], dev,
+                                        usb_sndbulkpipe(dev,
+                                                endpoint->bEndpointAddress),
+                                        port->bulk_out_buffers[j], buffer_size,
+                                        serial->type->write_bulk_callback,
+                                        port);
+                }
         }
 
         if (serial->type->read_int_callback) {