[PATCH 8/9] USB: serial: clear fifo on close
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From: Johan Hovold on 17 Mar 2010 18:10 Make sure fifo is emptied on close. Signed-off-by: Johan Hovold <jhovold(a)gmail.com> --- drivers/usb/serial/generic.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index d3ef69f..e0c7d53 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -155,13 +155,19 @@ 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); } -- 1.7.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |