TTY: ircomm, use tty_port_close_start helper

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / irda / ircomm / ircomm_tty.c

diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index cfe352dfb4847d7d703fccf5ca4d49f43beb9f32..4e35b45c1c73a6d40c093b5fb9bf4de4d791950d 100644 (file)
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -509,64 +509,18 @@ static void ircomm_tty_close(struct tty_struct *tty, struct file *filp)
 {
        struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
        struct tty_port *port = &self->port;
-       unsigned long flags;
 
        IRDA_DEBUG(0, "%s()\n", __func__ );
 
        IRDA_ASSERT(self != NULL, return;);
        IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return;);
 
-       spin_lock_irqsave(&port->lock, flags);
-
-       if (tty_hung_up_p(filp)) {
-               spin_unlock_irqrestore(&port->lock, flags);
-
-               IRDA_DEBUG(0, "%s(), returning 1\n", __func__ );
-               return;
-       }
-
-       if ((tty->count == 1) && (port->count != 1)) {
-               /*
-                * Uh, oh.  tty->count is 1, which means that the tty
-                * structure will be freed.  state->count should always
-                * be one in these conditions.  If it's greater than
-                * one, we've got real problems, since it means the
-                * serial port won't be shutdown.
-                */
-               IRDA_DEBUG(0, "%s(), bad serial port count; "
-                          "tty->count is 1, state->count is %d\n", __func__ ,
-                          port->count);
-               port->count = 1;
-       }
-
-       if (--port->count < 0) {
-               IRDA_ERROR("%s(), bad serial port count for ttys%d: %d\n",
-                          __func__, self->line, port->count);
-               port->count = 0;
-       }
-       if (port->count) {
-               spin_unlock_irqrestore(&port->lock, flags);
-
-               IRDA_DEBUG(0, "%s(), open count > 0\n", __func__ );
+       if (tty_port_close_start(port, tty, filp) == 0)
                return;
-       }
-
-       set_bit(ASYNCB_CLOSING, &port->flags);
-
-       spin_unlock_irqrestore(&port->lock, flags);
-
-       /*
-        * Now we wait for the transmit buffer to clear; and we notify
-        * the line discipline to only process XON/XOFF characters.
-        */
-       tty->closing = 1;
-       if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-               tty_wait_until_sent_from_close(tty, port->closing_wait);
 
        ircomm_tty_shutdown(self);
 
        tty_driver_flush_buffer(tty);
-       tty_ldisc_flush(tty);
 
        tty_port_close_end(port, tty);
        tty_port_tty_set(port, NULL);