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authorJohan Hovold <johan@kernel.org>2017-12-18 12:00:19 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-12-18 12:25:14 +0100
commitafe3eb60fa82a5d812378530b50755f58acc029c (patch)
tree8ebb0b16dc033989127f65715ff85c506ba02302 /drivers/tty/serdev
parent19ac50f655373c45f3cb548f510510282186a3dd (diff)
downloadlinux-afe3eb60fa82a5d812378530b50755f58acc029c.tar.bz2
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: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serdev')
-rw-r--r--drivers/tty/serdev/serdev-ttyport.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serdev/serdev-ttyport.c b/drivers/tty/serdev/serdev-ttyport.c
index c2629ab1bbcf..a5abb05be67d 100644
--- a/drivers/tty/serdev/serdev-ttyport.c
+++ b/drivers/tty/serdev/serdev-ttyport.c
@@ -59,7 +59,8 @@ static void ttyport_write_wakeup(struct tty_port *port)
test_bit(SERPORT_ACTIVE, &serport->flags))
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);
}