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| author | Johan Hovold <jhovold@gmail.com> | 2013-04-12 10:32:30 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-12 14:08:18 -0700 |
| commit | 53a72d57515b2c94af616bceab79751f894eca56 (patch) | |
| tree | c0d30022b4e6f56ab2769b253d854738e9981f3f | |
| parent | 5d8be15a621d739c376572607bab1ac0449947a4 (diff) | |
| download | linux-3.10-53a72d57515b2c94af616bceab79751f894eca56.tar.gz linux-3.10-53a72d57515b2c94af616bceab79751f894eca56.tar.bz2 linux-3.10-53a72d57515b2c94af616bceab79751f894eca56.zip | |
TTY: synclinkmp: fix DTR being raised on hang up
Make sure to check ASYNC_INITIALISED before raising DTR when waking up
from blocked open in block_til_ready.
Currently DTR could get raised at hang up as a blocked process would
raise DTR unconditionally before checking for hang up and returning.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/synclinkmp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c index 6d5780cf1d5..ff171384ea5 100644 --- a/drivers/tty/synclinkmp.c +++ b/drivers/tty/synclinkmp.c @@ -3329,7 +3329,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, port->blocked_open++; while (1) { - if (tty->termios.c_cflag & CBAUD) + if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags)) tty_port_raise_dtr_rts(port); set_current_state(TASK_INTERRUPTIBLE); |