Commit 53a72d57 authored Apr 12, 2013 by Johan Hovold Committed by Greg Kroah-Hartman Apr 12, 2013

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>

parent 5d8be15a

drivers/tty/synclinkmp.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);

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