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USB: serial: clear fifo on close 

Make sure fifo is emptied on close.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Johan Hovold 2010-03-17 23:00:44 +01:00 committed by Greg Kroah-Hartman
parent 50dbb85287
commit ec3ee5086c
1 changed files with 7 additions and 1 deletions
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8
drivers/usb/serial/generic.c
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@ -156,13 +156,19 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_open);
static void generic_cleanup(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
unsigned long flags;
dbg("%s - port %d", __func__, port->number);
if (serial->dev) {
/* shutdown any bulk transfers that might be going on */
if (port->bulk_out_size)
if (port->bulk_out_size) {
usb_kill_urb(port->write_urb);
spin_lock_irqsave(&port->lock, flags);
kfifo_reset_out(&port->write_fifo);
spin_unlock_irqrestore(&port->lock, flags);
}
if (port->bulk_in_size)
usb_kill_urb(port->read_urb);
}