From 4a90f09b20f4622dcbff1f0e1e6bae1704f8ad8c Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 13 Oct 2008 10:39:46 +0100 Subject: tty: usb-serial krefs Use kref in the USB serial drivers so that we don't free tty structures from under the URB receive handlers as has historically been the case if you were unlucky. This also gives us a framework for general tty drivers to use tty_port objects and refcount. Contains two err->dev_err changes merged together to fix clashes in the -next tree. Signed-off-by: Alan Cox Signed-off-by: Linus Torvalds --- drivers/usb/serial/kl5kusb105.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/usb/serial/kl5kusb105.c') diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index b84dddc7112..ff3a07f5102 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -658,7 +658,7 @@ static void klsi_105_read_bulk_callback(struct urb *urb) } else { int bytes_sent = ((__u8 *) data)[0] + ((unsigned int) ((__u8 *) data)[1] << 8); - tty = port->port.tty; + tty = tty_port_tty_get(&port->port); /* we should immediately resubmit the URB, before attempting * to pass the data on to the tty layer. But that needs locking * against re-entry an then mixed-up data because of @@ -679,6 +679,7 @@ static void klsi_105_read_bulk_callback(struct urb *urb) tty_buffer_request_room(tty, bytes_sent); tty_insert_flip_string(tty, data + 2, bytes_sent); tty_flip_buffer_push(tty); + tty_kref_put(tty); /* again lockless, but debug info only */ priv->bytes_in += bytes_sent; -- cgit v1.2.3