Commit 19b2ba0b authored by Yu Tu's avatar Yu Tu Committed by Greg Kroah-Hartman
Browse files

tty: serial: meson: The system stuck when you run the stty command on the... 


tty: serial: meson: The system stuck when you run the stty command on the console to change the baud rate

Start the console and run the following commands in turn:
stty -F /dev/ttyAML0 115200 and stty -F /dev/ttyAML0 921600. The
system will stuck.

Signed-off-by: default avatarYu Tu <yu.tu@amlogic.com>
Link: https://lore.kernel.org/r/20220225073922.3947-6-yu.tu@amlogic.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e5fc2b99

drivers/tty/serial/meson_uart.c

+5 −0
Original line number Diff line number Diff line
@@ -365,8 +365,13 @@ static void meson_uart_set_termios(struct uart_port *port, 
	writel(val, port->membase + AML_UART_CONTROL);



	baud = uart_get_baud_rate(port, termios, old, 50, 4000000);



	spin_unlock_irqrestore(&port->lock, flags);



	meson_uart_change_speed(port, baud);



	spin_lock_irqsave(&port->lock, flags);



	port->read_status_mask = AML_UART_TX_FIFO_WERR;

	if (iflags & INPCK)

		port->read_status_mask |= AML_UART_PARITY_ERR |