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Subject[PATCH v3 2/6] TTY: wake up processes last at hangup
Date
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>
---
drivers/tty/tty_port.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 57a061e..3de5918 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -231,9 +231,9 @@ void tty_port_hangup(struct tty_port *port)
}
port->tty = NULL;
spin_unlock_irqrestore(&port->lock, flags);
+ tty_port_shutdown(port);
wake_up_interruptible(&port->open_wait);
wake_up_interruptible(&port->delta_msr_wait);
- tty_port_shutdown(port);
}
EXPORT_SYMBOL(tty_port_hangup);

--
1.8.1.1


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