From: Johan Hovold <jhovold@xxxxxxxxx> Return immediately from generic process_read_urb if urb is empty. Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- drivers/usb/serial/generic.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index fcd30b8..a817ced 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -324,6 +324,9 @@ void usb_serial_generic_process_read_urb(struct urb *urb) char *ch = (char *)urb->transfer_buffer; int i; + if (!urb->actual_length) + return; + tty = tty_port_tty_get(&port->port); if (!tty) return; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
