From ec3ee5086c1e1b883292eaf795b5c1b0c25bcffe Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 17 Mar 2010 23:00:44 +0100 Subject: [PATCH] USB: serial: clear fifo on close Make sure fifo is emptied on close. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/generic.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 2a3196a2c66c..583244bd84b1 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -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); } -- 2.39.5