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-rw-r--r--drivers/char/tty_port.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/char/tty_port.c b/drivers/char/tty_port.c
index 3ef644a..43a1907 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);