diff options
| -rw-r--r-- | drivers/tty/tty_port.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index bcc15f75646c..f4698696abae 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -572,6 +572,14 @@ int tty_port_install(struct tty_port *port, struct tty_driver *driver, } EXPORT_SYMBOL_GPL(tty_port_install); +/** + * tty_port_open + * + * Caller holds tty lock. + * + * NB: may drop and reacquire tty lock (in tty_port_block_til_ready()) so + * tty and tty_port may have changed state (eg., may be hung up now) + */ int tty_port_open(struct tty_port *port, struct tty_struct *tty, struct file *filp) { |