--- zzzz-none-000/linux-3.10.107/drivers/tty/synclinkmp.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/tty/synclinkmp.c	2021-02-04 17:41:59.000000000 +0000
@@ -752,15 +752,6 @@
 		printk("%s(%d):%s open(), old ref count = %d\n",
 			 __FILE__,__LINE__,tty->driver->name, info->port.count);
 
-	/* If port is closing, signal caller to try again */
-	if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
-		if (info->port.flags & ASYNC_CLOSING)
-			interruptible_sleep_on(&info->port.close_wait);
-		retval = ((info->port.flags & ASYNC_HUP_NOTIFY) ?
-			-EAGAIN : -ERESTARTSYS);
-		goto cleanup;
-	}
-
 	info->port.low_latency = (info->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
 
 	spin_lock_irqsave(&info->netlock, flags);
@@ -1655,7 +1646,8 @@
 		printk("%s:hdlcdev_open(%s)\n",__FILE__,dev->name);
 
 	/* generic HDLC layer open processing */
-	if ((rc = hdlc_open(dev)))
+	rc = hdlc_open(dev);
+	if (rc)
 		return rc;
 
 	/* arbitrate between network and tty opens */
@@ -1766,6 +1758,7 @@
 					      HDLC_FLAG_TXC_TXCPIN | HDLC_FLAG_TXC_DPLL |
 					      HDLC_FLAG_TXC_BRG    | HDLC_FLAG_TXC_RXCPIN);
 
+		memset(&new_line, 0, sizeof(new_line));
 		switch (flags){
 		case (HDLC_FLAG_RXC_RXCPIN | HDLC_FLAG_TXC_TXCPIN): new_line.clock_type = CLOCK_EXT; break;
 		case (HDLC_FLAG_RXC_BRG    | HDLC_FLAG_TXC_BRG):    new_line.clock_type = CLOCK_INT; break;
@@ -1921,7 +1914,8 @@
 
 	/* allocate and initialize network and HDLC layer objects */
 
-	if (!(dev = alloc_hdlcdev(info))) {
+	dev = alloc_hdlcdev(info);
+	if (!dev) {
 		printk(KERN_ERR "%s:hdlc device allocation failure\n",__FILE__);
 		return -ENOMEM;
 	}
@@ -1942,7 +1936,8 @@
 	hdlc->xmit   = hdlcdev_xmit;
 
 	/* register objects with HDLC layer */
-	if ((rc = register_hdlc_device(dev))) {
+	rc = register_hdlc_device(dev);
+	if (rc) {
 		printk(KERN_WARNING "%s:unable to register hdlc device\n",__FILE__);
 		free_netdev(dev);
 		return rc;
@@ -3287,7 +3282,6 @@
 	DECLARE_WAITQUEUE(wait, current);
 	int		retval;
 	bool		do_clocal = false;
-	bool		extra_count = false;
 	unsigned long	flags;
 	int		cd;
 	struct tty_port *port = &info->port;
@@ -3321,10 +3315,7 @@
 			 __FILE__,__LINE__, tty->driver->name, port->count );
 
 	spin_lock_irqsave(&info->lock, flags);
-	if (!tty_hung_up_p(filp)) {
-		extra_count = true;
-		port->count--;
-	}
+	port->count--;
 	spin_unlock_irqrestore(&info->lock, flags);
 	port->blocked_open++;
 
@@ -3341,9 +3332,8 @@
 		}
 
 		cd = tty_port_carrier_raised(port);
-
- 		if (!(port->flags & ASYNC_CLOSING) && (do_clocal || cd))
- 			break;
+		if (do_clocal || cd)
+			break;
 
 		if (signal_pending(current)) {
 			retval = -ERESTARTSYS;
@@ -3361,8 +3351,7 @@
 
 	set_current_state(TASK_RUNNING);
 	remove_wait_queue(&port->open_wait, &wait);
-
-	if (extra_count)
+	if (!tty_hung_up_p(filp))
 		port->count++;
 	port->blocked_open--;
 
@@ -3478,7 +3467,7 @@
 	for ( i = 0; i < info->rx_buf_count; i++ ) {
 		/* calculate and store physical address of this buffer entry */
 		info->rx_buf_list_ex[i].phys_entry =
-			info->buffer_list_phys + (i * sizeof(SCABUFSIZE));
+			info->buffer_list_phys + (i * SCABUFSIZE);
 
 		/* calculate and store physical address of */
 		/* next entry in cirular list of entries */
@@ -3924,7 +3913,8 @@
 	printk("Unloading %s %s\n", driver_name, driver_version);
 
 	if (serial_driver) {
-		if ((rc = tty_unregister_driver(serial_driver)))
+		rc = tty_unregister_driver(serial_driver);
+		if (rc)
 			printk("%s(%d) failed to unregister tty driver err=%d\n",
 			       __FILE__,__LINE__,rc);
 		put_tty_driver(serial_driver);