If bit-rate calculation result of HSCIF is expect 255 from 0, driver does not calculate error bit. However, we need to round the value to calculate error bit in the case of negative value. This rounds the value of bit-rate using clamp(), and bit-rate is the case of negative value, it enables the calculation of the error bit. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@xxxxxxxxxxx> --- drivers/tty/serial/sh-sci.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index ce80137..7f571a8 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1798,8 +1798,7 @@ static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq, /* integerized formulas from HSCIF documentation */ br = DIV_ROUND_CLOSEST(freq, (sr * (1 << (2 * c + 1)) * bps)) - 1; - if (br < 0 || br > 255) - continue; + br = clamp(br, 0, 255); err = DIV_ROUND_CLOSEST(freq, ((br + 1) * bps * sr * (1 << (2 * c + 1)) / 1000)) - 1000; -- 2.0.0 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
