These patches against tty-next fix a few issues with tty-port hangup and close. The first and third patch are essentially clean ups. The second patch makes sure DTR is dropped also on hangup and that DTR is only dropped for initialised ports (where is could have been raised in the first place). The fourth and final patch, make sure no tty callbacks are made from tty_port_close_start when the port has not been initialised (successfully opened). This was previously only done for wait_until_sent but there's no reason to call flush_buffer or to honour port drain delay either. The latter could cause a failed open to stall for up to two seconds. As a side-effect, these patches also fix an issue in USB-serial where we could get tty-port callbacks on an uninitialised port after having hung up and unregistered a device after disconnect. Johan v2: - reuse tty reference from hangup and close in shutdown. Both call sites guarantee tty is either NULL or has a kref. Changes since RFC-series: - fix up the two driver relying on tty_port_close_start directly but that did not manage DTR themselves Johan Hovold (4): TTY: clean up port shutdown TTY: fix DTR not being dropped on hang up TTY: clean up port drain-delay handling TTY: fix close of uninitialised ports drivers/tty/mxser.c | 4 +++ drivers/tty/n_gsm.c | 4 +++ drivers/tty/tty_port.c | 72 +++++++++++++++++++++++++++++--------------------- 3 files changed, 50 insertions(+), 30 deletions(-) -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
