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| author |   Johan Hovold <jhovold@gmail.com> | 2013-03-07 15:55:52 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-18 16:27:54 -0700 |
| commit | b74414f5f3227d9db309bfaaea3ae889af01430a (patch) | |
| tree | fe5a3c5e37dae45d070f90c48a646649e42d8190 /drivers/tty/tty_port.c | |
| parent | TTY: fix DTR not being dropped on hang up (diff) | |
| download | linux-dev-b74414f5f3227d9db309bfaaea3ae889af01430a.tar.xz linux-dev-b74414f5f3227d9db309bfaaea3ae889af01430a.zip | |
TTY: clean up port drain-delay handling
Move port drain-delay handling to a separate function.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_port.c')
| -rw-r--r-- | drivers/tty/tty_port.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index 0af8d9aa5b02..20426ccbd58b 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -441,6 +441,20 @@ int tty_port_block_til_ready(struct tty_port *port, } EXPORT_SYMBOL(tty_port_block_til_ready); +static void tty_port_drain_delay(struct tty_port *port, struct tty_struct *tty) +{ + unsigned int bps = tty_get_baud_rate(tty); + long timeout; + + if (bps > 1200) { + timeout = (HZ * 10 * port->drain_delay) / bps; + timeout = max_t(long, timeout, HZ / 10); + } else { + timeout = 2 * HZ; + } + schedule_timeout_interruptible(timeout); +} + int tty_port_close_start(struct tty_port *port, struct tty_struct *tty, struct file *filp) { @@ -479,17 +493,8 @@ int tty_port_close_start(struct tty_port *port, if (test_bit(ASYNCB_INITIALIZED, &port->flags) && port->closing_wait != ASYNC_CLOSING_WAIT_NONE) tty_wait_until_sent_from_close(tty, port->closing_wait); - if (port->drain_delay) { - unsigned int bps = tty_get_baud_rate(tty); - long timeout; - - if (bps > 1200) - timeout = max_t(long, - (HZ * 10 * port->drain_delay) / bps, HZ / 10); - else - timeout = 2 * HZ; - schedule_timeout_interruptible(timeout); - } + if (port->drain_delay) + tty_port_drain_delay(port, tty); /* Flush the ldisc buffering */ tty_ldisc_flush(tty); |