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TTY: use tty_wait_until_sent_from_close in tty_port_close_start

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Let's use the newly added helper to avoid stalls in drivers which are
already ported to tty_port helpers.

We have to ensure here, that there is no user of tty_port_close_start
and tty_port_close which holds port->mutex (or other) lock over them.
And sure, there is none.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jiri Slaby 2011-08-25 15:12:07 +02:00 committed by Greg Kroah-Hartman
parent a57a7bf3fc
commit 424cc03912
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/tty_port.c
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@ -350,7 +350,7 @@ int tty_port_close_start(struct tty_port *port,
tty_driver_flush_buffer(tty);
if (test_bit(ASYNCB_INITIALIZED, &port->flags) &&
port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
tty_wait_until_sent(tty, port->closing_wait);
tty_wait_until_sent_from_close(tty, port->closing_wait);
if (port->drain_delay) {
unsigned int bps = tty_get_baud_rate(tty);
long timeout;