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>
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 0af8d9a..20426cc 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -441,6 +441,20 @@
}
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 @@
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);