TTY: amiserial, use tty_port_block_til_ready

Hmm, 150 lines of duplicated stuff is gone now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 61d7461..8cc8e15 100644 (file)
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1556,119 +1556,6 @@ static void rs_hangup(struct tty_struct *tty)
 }
 
 /*
- * ------------------------------------------------------------
- * rs_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file * filp,
-                          struct serial_state *info)
-{
-#ifdef DECLARE_WAITQUEUE
-       DECLARE_WAITQUEUE(wait, current);
-#else
-       struct wait_queue wait = { current, NULL };
-#endif
-       struct tty_port *port = &info->tport;
-       int             retval;
-       int             do_clocal = 0, extra_count = 0;
-       unsigned long   flags;
-
-       /*
-        * If the device is in the middle of being closed, then block
-        * until it's done, and then try again.
-        */
-       if (tty_hung_up_p(filp) ||
-           (port->flags & ASYNC_CLOSING)) {
-               if (port->flags & ASYNC_CLOSING)
-                       interruptible_sleep_on(&port->close_wait);
-#ifdef SERIAL_DO_RESTART
-               return ((port->flags & ASYNC_HUP_NOTIFY) ?
-                       -EAGAIN : -ERESTARTSYS);
-#else
-               return -EAGAIN;
-#endif
-       }
-
-       /*
-        * If non-blocking mode is set, or the port is not enabled,
-        * then make the check up front and then exit.
-        */
-       if ((filp->f_flags & O_NONBLOCK) ||
-           (tty->flags & (1 << TTY_IO_ERROR))) {
-               port->flags |= ASYNC_NORMAL_ACTIVE;
-               return 0;
-       }
-
-       if (tty->termios->c_cflag & CLOCAL)
-               do_clocal = 1;
-
-       /*
-        * Block waiting for the carrier detect and the line to become
-        * free (i.e., not in use by the callout).  While we are in
-        * this loop, port->count is dropped by one, so that
-        * rs_close() knows when to free things.  We restore it upon
-        * exit, either normal or abnormal.
-        */
-       retval = 0;
-       add_wait_queue(&port->open_wait, &wait);
-#ifdef SERIAL_DEBUG_OPEN
-       printk("block_til_ready before block: ttys%d, count = %d\n",
-              info->line, port->count);
-#endif
-       local_irq_save(flags);
-       if (!tty_hung_up_p(filp)) {
-               extra_count = 1;
-               port->count--;
-       }
-       local_irq_restore(flags);
-       port->blocked_open++;
-       while (1) {
-               if (tty->termios->c_cflag & CBAUD)
-                       tty_port_raise_dtr_rts(port);
-               set_current_state(TASK_INTERRUPTIBLE);
-               if (tty_hung_up_p(filp) ||
-                   !(port->flags & ASYNC_INITIALIZED)) {
-#ifdef SERIAL_DO_RESTART
-                       if (port->flags & ASYNC_HUP_NOTIFY)
-                               retval = -EAGAIN;
-                       else
-                               retval = -ERESTARTSYS;
-#else
-                       retval = -EAGAIN;
-#endif
-                       break;
-               }
-               if (!(port->flags & ASYNC_CLOSING) &&
-                   (do_clocal || tty_port_carrier_raised(port)))
-                       break;
-               if (signal_pending(current)) {
-                       retval = -ERESTARTSYS;
-                       break;
-               }
-#ifdef SERIAL_DEBUG_OPEN
-               printk("block_til_ready blocking: ttys%d, count = %d\n",
-                      info->line, port->count);
-#endif
-               tty_unlock();
-               schedule();
-               tty_lock();
-       }
-       __set_current_state(TASK_RUNNING);
-       remove_wait_queue(&port->open_wait, &wait);
-       if (extra_count)
-               port->count++;
-       port->blocked_open--;
-#ifdef SERIAL_DEBUG_OPEN
-       printk("block_til_ready after blocking: ttys%d, count = %d\n",
-              info->line, port->count);
-#endif
-       if (retval)
-               return retval;
-       port->flags |= ASYNC_NORMAL_ACTIVE;
-       return 0;
-}
-
-/*
  * This routine is called whenever a serial port is opened.  It
  * enables interrupts for a serial port, linking in its async structure into
  * the IRQ chain.   It also performs the serial-specific
@@ -1687,47 +1574,14 @@ static int rs_open(struct tty_struct *tty, struct file * filp)
        if (serial_paranoia_check(info, tty->name, "rs_open"))
                return -ENODEV;
 
-#ifdef SERIAL_DEBUG_OPEN
-       printk("rs_open %s, count = %d\n", tty->name, info->count);
-#endif
        tty->low_latency = (port->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 
-       /*
-        * If the port is the middle of closing, bail out now
-        */
-       if (tty_hung_up_p(filp) ||
-           (port->flags & ASYNC_CLOSING)) {
-               if (port->flags & ASYNC_CLOSING)
-                       interruptible_sleep_on(&port->close_wait);
-#ifdef SERIAL_DO_RESTART
-               return ((port->flags & ASYNC_HUP_NOTIFY) ?
-                       -EAGAIN : -ERESTARTSYS);
-#else
-               return -EAGAIN;
-#endif
-       }
-
-       /*
-        * Start up serial port
-        */
        retval = startup(tty, info);
        if (retval) {
                return retval;
        }
 
-       retval = block_til_ready(tty, filp, info);
-       if (retval) {
-#ifdef SERIAL_DEBUG_OPEN
-               printk("rs_open returning after block_til_ready with %d\n",
-                      retval);
-#endif
-               return retval;
-       }
-
-#ifdef SERIAL_DEBUG_OPEN
-       printk("rs_open %s successful...", tty->name);
-#endif
-       return 0;
+       return tty_port_block_til_ready(port, tty, filp);
 }
 
 /*