tty: Introduce some close helpers for ports

[linux-2.6-omap-h63xx.git] / drivers / char / synclink_gt.c

diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 625c9bde3be846aa61adefc3d029f3b0bb58873d..53544e21f191a7d0779bbded3287040663ac209d 100644 (file)
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -720,44 +720,9 @@ static void close(struct tty_struct *tty, struct file *filp)
                return;
        DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
 
-       if (!info->port.count)
-               return;
-
-       if (tty_hung_up_p(filp))
+       if (tty_port_close_start(&info->port, tty, filp) == 0)
                goto cleanup;
 
-       if ((tty->count == 1) && (info->port.count != 1)) {
-               /*
-                * tty->count is 1 and the tty structure will be freed.
-                * info->port.count should be one in this case.
-                * if it's not, correct it so that the port is shutdown.
-                */
-               DBGERR(("%s close: bad refcount; tty->count=1, "
-                      "info->port.count=%d\n", info->device_name, info->port.count));
-               info->port.count = 1;
-       }
-
-       info->port.count--;
-
-       /* if at least one open remaining, leave hardware active */
-       if (info->port.count)
-               goto cleanup;
-
-       info->port.flags |= ASYNC_CLOSING;
-
-       /* set tty->closing to notify line discipline to
-        * only process XON/XOFF characters. Only the N_TTY
-        * discipline appears to use this (ppp does not).
-        */
-       tty->closing = 1;
-
-       /* wait for transmit data to clear all layers */
-
-       if (info->port.closing_wait != ASYNC_CLOSING_WAIT_NONE) {
-               DBGINFO(("%s call tty_wait_until_sent\n", info->device_name));
-               tty_wait_until_sent(tty, info->port.closing_wait);
-       }
-
        if (info->port.flags & ASYNC_INITIALIZED)
                wait_until_sent(tty, info->timeout);
        flush_buffer(tty);
@@ -765,20 +730,8 @@ static void close(struct tty_struct *tty, struct file *filp)
 
        shutdown(info);
 
-       tty->closing = 0;
+       tty_port_close_end(&info->port, tty);
        info->port.tty = NULL;
-
-       if (info->port.blocked_open) {
-               if (info->port.close_delay) {
-                       msleep_interruptible(jiffies_to_msecs(info->port.close_delay));
-               }
-               wake_up_interruptible(&info->port.open_wait);
-       }
-
-       info->port.flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-
-       wake_up_interruptible(&info->port.close_wait);
-
 cleanup:
        DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
 }