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tty: serial: 8250_mtk: Fix quot calculation

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The calculation of value quot for highspeed register set to three
was wrong. This patch fixes the calculation so that the serial port
for baudrates bigger then 576000 baud is working correctly.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthias Brugger 2014-10-09 18:23:31 +02:00 committed by Greg Kroah-Hartman
parent 494c1eac7e
commit cd92208f69
1 changed files with 1 additions and 1 deletions
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drivers/tty/serial/8250/8250_mtk.c
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@ -81,7 +81,7 @@ mtk8250_set_termios(struct uart_port *port, struct ktermios *termios,
/* Set to highest baudrate supported */
if (baud >= 1152000)
baud = 921600;
quot = DIV_ROUND_CLOSEST(port->uartclk, 256 * baud);
quot = (port->uartclk / (256 * baud)) + 1;
}
/*