--- zzzz-none-000/linux-3.10.107/drivers/tty/serial/bfin_sport_uart.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/tty/serial/bfin_sport_uart.c	2021-02-04 17:41:59.000000000 +0000
@@ -33,6 +33,7 @@
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/serial_core.h>
+#include <linux/gpio.h>
 
 #include <asm/bfin_sport.h>
 #include <asm/delay.h>
@@ -161,11 +162,12 @@
 		if (!uart_handle_sysrq_char(&up->port, ch))
 			tty_insert_flip_char(port, ch, TTY_NORMAL);
 	}
-	/* XXX this won't deadlock with lowlat? */
-	tty_flip_buffer_push(port);
 
 	spin_unlock(&up->port.lock);
 
+	/* XXX this won't deadlock with lowlat? */
+	tty_flip_buffer_push(port);
+
 	return IRQ_HANDLED;
 }
 
@@ -425,11 +427,6 @@
 	SSYNC();
 }
 
-static void sport_enable_ms(struct uart_port *port)
-{
-	pr_debug("%s enter\n", __func__);
-}
-
 static void sport_break_ctl(struct uart_port *port, int break_state)
 {
 	pr_debug("%s enter\n", __func__);
@@ -499,6 +496,13 @@
 
 	pr_debug("%s enter, c_cflag:%08x\n", __func__, termios->c_cflag);
 
+#ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS
+	if (old == NULL && up->cts_pin != -1)
+		termios->c_cflag |= CRTSCTS;
+	else if (up->cts_pin == -1)
+		termios->c_cflag &= ~CRTSCTS;
+#endif
+
 	switch (termios->c_cflag & CSIZE) {
 	case CS8:
 		up->csize = 8;
@@ -513,14 +517,15 @@
 		up->csize = 5;
 		break;
 	default:
-		pr_warning("requested word length not supported\n");
+		pr_warn("requested word length not supported\n");
+		break;
 	}
 
 	if (termios->c_cflag & CSTOPB) {
 		up->stopb = 1;
 	}
 	if (termios->c_cflag & PARENB) {
-		pr_warning("PAREN bits is not supported yet\n");
+		pr_warn("PAREN bit is not supported yet\n");
 		/* up->parib = 1; */
 	}
 
@@ -586,7 +591,6 @@
 	.stop_tx	= sport_stop_tx,
 	.start_tx	= sport_start_tx,
 	.stop_rx	= sport_stop_rx,
-	.enable_ms	= sport_enable_ms,
 	.break_ctl	= sport_break_ctl,
 	.startup	= sport_startup,
 	.shutdown	= sport_shutdown,
@@ -765,8 +769,8 @@
 			return -ENOMEM;
 		}
 
-		ret = peripheral_request_list(
-			(unsigned short *)pdev->dev.platform_data, DRV_NAME);
+		ret = peripheral_request_list(dev_get_platdata(&pdev->dev),
+						DRV_NAME);
 		if (ret) {
 			dev_err(&pdev->dev,
 				"Fail to request SPORT peripherals\n");
@@ -812,10 +816,8 @@
 		res = platform_get_resource(pdev, IORESOURCE_IO, 0);
 		if (res == NULL)
 			sport->cts_pin = -1;
-		else {
+		else
 			sport->cts_pin = res->start;
-			sport->port.flags |= ASYNC_CTS_FLOW;
-		}
 
 		res = platform_get_resource(pdev, IORESOURCE_IO, 1);
 		if (res == NULL)
@@ -842,8 +844,7 @@
 out_error_unmap:
 		iounmap(sport->port.membase);
 out_error_free_peripherals:
-		peripheral_free_list(
-			(unsigned short *)pdev->dev.platform_data);
+		peripheral_free_list(dev_get_platdata(&pdev->dev));
 out_error_free_mem:
 		kfree(sport);
 		bfin_sport_uart_ports[pdev->id] = NULL;
@@ -862,8 +863,7 @@
 	if (sport) {
 		uart_remove_one_port(&sport_uart_reg, &sport->port);
 		iounmap(sport->port.membase);
-		peripheral_free_list(
-			(unsigned short *)pdev->dev.platform_data);
+		peripheral_free_list(dev_get_platdata(&pdev->dev));
 		kfree(sport);
 		bfin_sport_uart_ports[pdev->id] = NULL;
 	}
@@ -883,7 +883,7 @@
 };
 
 #ifdef CONFIG_SERIAL_BFIN_SPORT_CONSOLE
-static __initdata struct early_platform_driver early_sport_uart_driver = {
+static struct early_platform_driver early_sport_uart_driver __initdata = {
 	.class_str = CLASS_BFIN_SPORT_CONSOLE,
 	.pdrv = &sport_uart_driver,
 	.requested_id = EARLY_PLATFORM_ID_UNSET,