From: Nobuhiro Iwamatsu Date: Wed, 19 Nov 2014 22:58:27 +0000 (+0900) Subject: serial: sh-sci: Change checking for error rate of HSCIF X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f53297fb99c8d2381a94cbaacc3e81c0c5db4cfd;p=deliverable%2Flinux.git serial: sh-sci: Change checking for error rate of HSCIF This changes negative values of error rate to be checked, because these values are valid as error rate. And this changes in the process of adopting a value close to 0. Signed-off-by: Nobuhiro Iwamatsu Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index eb17c7124e72..fccebbdf449f 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1812,9 +1812,6 @@ static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq, err = DIV_ROUND_CLOSEST(freq, ((br + 1) * bps * sr * (1 << (2 * c + 1)) / 1000)) - 1000; - if (err < 0) - continue; - /* Calc recv margin * M: Receive margin (%) * N: Ratio of bit rate to clock (N = sampling rate) @@ -1829,7 +1826,7 @@ static void sci_baud_calc_hscif(unsigned int bps, unsigned long freq, */ recv_margin = abs((500 - DIV_ROUND_CLOSEST(1000, sr << 1)) / 10); - if (min_err > err) { + if (abs(min_err) > abs(err)) { min_err = err; recv_max_margin = recv_margin; } else if ((min_err == err) &&