diff options
author | Johan Hovold <johan@kernel.org> | 2017-11-03 15:30:58 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-28 16:03:35 +0100 |
commit | cda64188ca918fcddc8c6e89bbee5a38b029117a (patch) | |
tree | 89aaae796b9c24dab36f17cfe6f71b678f86f878 /drivers/tty/serdev | |
parent | 51899a63b42ee01df676b0624df4e81a517c3571 (diff) | |
download | op-kernel-dev-cda64188ca918fcddc8c6e89bbee5a38b029117a.zip op-kernel-dev-cda64188ca918fcddc8c6e89bbee5a38b029117a.tar.gz |
serdev: ttyport: ignore carrier detect to avoid hangups
Serdev currently does not support hangups so make sure to set CLOCAL to
prevent loss of carrier from triggering one.
Note however that not all tty drivers honour CLOCAL.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serdev')
-rw-r--r-- | drivers/tty/serdev/serdev-ttyport.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c index f76a8e0..75f312e 100644 --- a/drivers/tty/serdev/serdev-ttyport.c +++ b/drivers/tty/serdev/serdev-ttyport.c @@ -115,6 +115,8 @@ static int ttyport_open(struct serdev_controller *ctrl) ktermios.c_cflag &= ~(CSIZE | PARENB); ktermios.c_cflag |= CS8; ktermios.c_cflag |= CRTSCTS; + /* Hangups are not supported so make sure to ignore carrier detect. */ + ktermios.c_cflag |= CLOCAL; tty_set_termios(tty, &ktermios); set_bit(SERPORT_ACTIVE, &serport->flags); |