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| author | Johan Hovold <jhovold@gmail.com> | 2013-04-12 10:32:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-12 23:08:17 +0200 |
| commit | 78c6cccadb6ead2dab503f95aefdbfb2ae409a32 (patch) | |
| tree | 120e59e1f5d261043a198e63a126a546877ad3fc /drivers | |
| parent | serial: 8250_dw: Fix the stub for dw8250_probe_acpi() (diff) | |
| download | linux-78c6cccadb6ead2dab503f95aefdbfb2ae409a32.tar.xz linux-78c6cccadb6ead2dab503f95aefdbfb2ae409a32.zip | |
TTY: synclink: 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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tty/synclink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c index 72d607101f90..8eaf1ab8addb 100644 --- a/drivers/tty/synclink.c +++ b/drivers/tty/synclink.c @@ -3308,7 +3308,7 @@ 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); |