From d74e8286885ac9f3ccc5e2dc2301f21bbec90f7b Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 30 Nov 2009 13:16:52 +0000 Subject: [PATCH] tty: tty_port: Add IO_ERROR bit handling To propogate tty_port_open/close to a few other devices we need to start handling the IO_ERROR flag on the tty. We can do this pretty trivially. Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/char/tty_port.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c index 3ef644a2e517..43a190738fee 100644 --- a/drivers/char/tty_port.c +++ b/drivers/char/tty_port.c @@ -122,8 +122,10 @@ void tty_port_hangup(struct tty_port *port) spin_lock_irqsave(&port->lock, flags); port->count = 0; port->flags &= ~ASYNC_NORMAL_ACTIVE; - if (port->tty) + if (port->tty) { + set_bit(TTY_IO_ERROR, &port->tty->flags); tty_kref_put(port->tty); + } port->tty = NULL; spin_unlock_irqrestore(&port->lock, flags); wake_up_interruptible(&port->open_wait); @@ -383,6 +385,7 @@ void tty_port_close(struct tty_port *port, struct tty_struct *tty, if (tty_port_close_start(port, tty, filp) == 0) return; tty_port_shutdown(port); + set_bit(TTY_IO_ERROR, &tty->flags); tty_port_close_end(port, tty); tty_port_tty_set(port, NULL); } @@ -414,6 +417,7 @@ int tty_port_open(struct tty_port *port, struct tty_struct *tty, } } set_bit(ASYNCB_INITIALIZED, &port->flags); + clear_bit(TTY_IO_ERROR, &tty->flags); } mutex_unlock(&port->mutex); return tty_port_block_til_ready(port, tty, filp); -- 2.20.1