Commit ff8b275f authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
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serial: sh-sci: Take into account sampling rate for max baud rate 



The maximum baud rate depends on the sampling rate.
HSCIF has a variable sampling rate and sets s->sampling_rate to zero,
hence use the minimum sampling rate of 8.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b4a5c459

drivers/tty/serial/sh-sci.c

+4 −1
Original line number Diff line number Diff line
@@ -1975,7 +1975,10 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios, 
	 * that the previous boot loader has enabled required clocks and

	 * setup the baud rate generator hardware for us already.

	 */

	max_baud = port->uartclk ? port->uartclk / 16 : 115200;

	if (port->uartclk)

		max_baud = port->uartclk / max(s->sampling_rate, 8U);

	else

		max_baud = 115200;



	baud = uart_get_baud_rate(port, termios, old, 0, max_baud);

	if (likely(baud && port->uartclk))

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