diff options
Diffstat (limited to 'drivers/char/tty_port.c')
| -rw-r--r-- | drivers/char/tty_port.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c index a4bbb28f10be..c63f3d33914a 100644 --- a/drivers/char/tty_port.c +++ b/drivers/char/tty_port.c @@ -219,8 +219,14 @@ int tty_port_block_til_ready(struct tty_port *port, /* if non-blocking mode is set we can pass directly to open unless the port has just hung up or is in another error state */ - if ((filp->f_flags & O_NONBLOCK) || - (tty->flags & (1 << TTY_IO_ERROR))) { + if (tty->flags & (1 << TTY_IO_ERROR)) { + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + if (filp->f_flags & O_NONBLOCK) { + /* Indicate we are open */ + if (tty->termios->c_cflag & CBAUD) + tty_port_raise_dtr_rts(port); port->flags |= ASYNC_NORMAL_ACTIVE; return 0; } |