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TTY: wake up processes last at hangup

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Move wake up of processes on blocked-open and modem-status wait queues
to after port shutdown at hangup.

This way the woken up processes can use the ASYNC_INITIALIZED flag to
detect port shutdown.

Note that this is the order currently used by serial-core.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-07 15:55:49 +01:00 • committed by Greg Kroah-Hartman
parent 8bde9658a0
commit 31ca020b57
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/tty_port.c
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@ -231,9 +231,9 @@ void tty_port_hangup(struct tty_port *port)
} }
port->tty = NULL; port->tty = NULL;
spin_unlock_irqrestore(&port->lock, flags); spin_unlock_irqrestore(&port->lock, flags);
tty_port_shutdown(port);
wake_up_interruptible(&port->open_wait); wake_up_interruptible(&port->open_wait);
wake_up_interruptible(&port->delta_msr_wait); wake_up_interruptible(&port->delta_msr_wait);
tty_port_shutdown(port);
} }
EXPORT_SYMBOL(tty_port_hangup); EXPORT_SYMBOL(tty_port_hangup);