diff options
| author | Johan Hovold <jhovold@gmail.com> | 2013-03-21 12:37:47 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-25 21:54:32 +0100 |
| commit | 7620c33afb643451e1cbdc7fa666842440f8af63 (patch) | |
| tree | 60a90c956826546e33cfd15ea7b3850274815e77 /drivers/usb/serial | |
| parent | USB: quatech2: always disable uart on close (diff) | |
| download | linux-7620c33afb643451e1cbdc7fa666842440f8af63.tar.xz linux-7620c33afb643451e1cbdc7fa666842440f8af63.zip | |
USB: visor: always disable uart on close
Always try to disable the uart on close.
Since the switch to tty ports, close will be called as part of shutdown
before disconnect returns. Hence there is no need to check the
disconnected flag, and we can put devices in disabled states also on
driver unbind.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/visor.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 1129aa73c23e..7573ec8a084f 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) |