--- zzzz-none-000/linux-4.4.271/drivers/tty/serial/serial_core.c	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/drivers/tty/serial/serial_core.c	2023-04-19 10:22:29.000000000 +0000
@@ -164,6 +164,8 @@
 	if (retval == 0) {
 		if (uart_console(uport) && uport->cons->cflag) {
 			tty->termios.c_cflag = uport->cons->cflag;
+			tty->termios.c_ospeed = uport->cons->baud;
+			tty->termios.c_ispeed = uport->cons->baud;
 			uport->cons->cflag = 0;
 		}
 		/*
@@ -1909,7 +1911,7 @@
 	{   4800, B4800   },
 	{   2400, B2400   },
 	{   1200, B1200   },
-	{      0, B38400  }
+	{      0, BOTHER  }
 };
 
 /**
@@ -1948,10 +1950,13 @@
 	 * Construct a cflag setting.
 	 */
 	for (i = 0; baud_rates[i].rate; i++)
-		if (baud_rates[i].rate <= baud)
+		if (baud_rates[i].rate == baud)
 			break;
 
 	termios.c_cflag |= baud_rates[i].cflag;
+	if (!baud_rates[i].rate) {
+		termios.c_ospeed = baud;
+	}
 
 	if (bits == 7)
 		termios.c_cflag |= CS7;
@@ -1981,8 +1986,10 @@
 	 * Allow the setting of the UART parameters with a NULL console
 	 * too:
 	 */
-	if (co)
+	if (co) {
 		co->cflag = termios.c_cflag;
+		co->baud = baud;
+	}
 
 	return 0;
 }