--- zzzz-none-000/linux-3.10.107/drivers/tty/serial/lantiq.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/tty/serial/lantiq.c	2021-02-04 17:41:59.000000000 +0000
@@ -21,7 +21,6 @@
  */
 
 #include <linux/slab.h>
-#include <linux/module.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/console.h>
@@ -154,11 +153,6 @@
 	ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);
 }
 
-static void
-lqasc_enable_ms(struct uart_port *port)
-{
-}
-
 static int
 lqasc_rx_chars(struct uart_port *port)
 {
@@ -318,7 +312,7 @@
 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
 	int retval;
 
-	if (ltq_port->clk)
+	if (!IS_ERR(ltq_port->clk))
 		clk_enable(ltq_port->clk);
 	port->uartclk = clk_get_rate(ltq_port->fpiclk);
 
@@ -386,7 +380,7 @@
 		port->membase + LTQ_ASC_RXFCON);
 	ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
 		port->membase + LTQ_ASC_TXFCON);
-	if (ltq_port->clk)
+	if (!IS_ERR(ltq_port->clk))
 		clk_disable(ltq_port->clk);
 }
 
@@ -502,8 +496,10 @@
 static void
 lqasc_release_port(struct uart_port *port)
 {
+	struct platform_device *pdev = to_platform_device(port->dev);
+
 	if (port->flags & UPF_IOREMAP) {
-		iounmap(port->membase);
+		devm_iounmap(&pdev->dev, port->membase);
 		port->membase = NULL;
 	}
 }
@@ -568,7 +564,6 @@
 	.stop_tx =	lqasc_stop_tx,
 	.start_tx =	lqasc_start_tx,
 	.stop_rx =	lqasc_stop_rx,
-	.enable_ms =	lqasc_enable_ms,
 	.break_ctl =	lqasc_break_ctl,
 	.startup =	lqasc_startup,
 	.shutdown =	lqasc_shutdown,
@@ -636,6 +631,9 @@
 
 	port = &ltq_port->port;
 
+	if (!IS_ERR(ltq_port->clk))
+		clk_enable(ltq_port->clk);
+
 	port->uartclk = clk_get_rate(ltq_port->fpiclk);
 
 	if (options)
@@ -706,7 +704,7 @@
 	port = &ltq_port->port;
 
 	port->iotype	= SERIAL_IO_MEM;
-	port->flags	= ASYNC_BOOT_AUTOCONF | UPF_IOREMAP;
+	port->flags	= UPF_BOOT_AUTOCONF | UPF_IOREMAP;
 	port->ops	= &lqasc_pops;
 	port->fifosize	= 16;
 	port->type	= PORT_LTQ_ASC,
@@ -741,12 +739,10 @@
 	{ .compatible = DRVNAME },
 	{},
 };
-MODULE_DEVICE_TABLE(of, ltq_asc_match);
 
 static struct platform_driver lqasc_driver = {
 	.driver		= {
 		.name	= DRVNAME,
-		.owner	= THIS_MODULE,
 		.of_match_table = ltq_asc_match,
 	},
 };
@@ -766,8 +762,4 @@
 
 	return ret;
 }
-
-module_init(init_lqasc);
-
-MODULE_DESCRIPTION("Lantiq serial port driver");
-MODULE_LICENSE("GPL");
+device_initcall(init_lqasc);