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| author |   Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2014-11-20 07:58:27 +0900 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-25 17:06:38 -0800 |
| commit | f53297fb99c8d2381a94cbaacc3e81c0c5db4cfd (patch) | |
| tree | 73728cca8f60a61a20ff3a3395cd6ac1a3ebabe9 /drivers/tty | |
| parent | serial: sh-sci: Add device tree support for r7s72100 (diff) | |
| download | linux-dev-f53297fb99c8d2381a94cbaacc3e81c0c5db4cfd.tar.xz linux-dev-f53297fb99c8d2381a94cbaacc3e81c0c5db4cfd.zip | |
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 <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 5 |
1 files changed, 1 insertions, 4 deletions
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) && |