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path: root/drivers/usb/serial/visor.c
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Diffstat (limited to 'drivers/usb/serial/visor.c')
-rw-r--r--drivers/usb/serial/visor.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 1129aa73c23..7573ec8a084 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -257,24 +257,18 @@ static void visor_close(struct usb_serial_port *port)
{
unsigned char *transfer_buffer;
- /* shutdown our urbs */
usb_serial_generic_close(port);
usb_kill_urb(port->interrupt_in_urb);
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected) {
- /* Try to send shutdown message, unless the device is gone */
- transfer_buffer = kmalloc(0x12, GFP_KERNEL);
- if (transfer_buffer) {
- usb_control_msg(port->serial->dev,
+ transfer_buffer = kmalloc(0x12, GFP_KERNEL);
+ if (!transfer_buffer)
+ return;
+ usb_control_msg(port->serial->dev,
usb_rcvctrlpipe(port->serial->dev, 0),
VISOR_CLOSE_NOTIFICATION, 0xc2,
0x0000, 0x0000,
transfer_buffer, 0x12, 300);
- kfree(transfer_buffer);
- }
- }
- mutex_unlock(&port->serial->disc_mutex);
+ kfree(transfer_buffer);
}
static void visor_read_int_callback(struct urb *urb)