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Commit afe3eb60 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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serdev: ttyport: do not used keyed wakeup in write_wakeup 



Serdev does not use the file abstraction and specifically there will
never be anyone polling a file descriptor for POLLOUT events.

Just use plain wake_up_interruptible() in the write_wakeup callback and
document why it's there.

Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 19ac50f6

drivers/tty/serdev/serdev-ttyport.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -59,7 +59,8 @@ static void ttyport_write_wakeup(struct tty_port *port) 
	    test_bit(SERPORT_ACTIVE, &serport->flags))

	    test_bit(SERPORT_ACTIVE, &serport->flags))

		serdev_controller_write_wakeup(ctrl);

		serdev_controller_write_wakeup(ctrl);





	wake_up_interruptible_poll(&tty->write_wait, POLLOUT);

	/* Wake up any tty_wait_until_sent() */

	wake_up_interruptible(&tty->write_wait);





	tty_kref_put(tty);

	tty_kref_put(tty);

}

}