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>
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index eb17c71..fccebbd 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1812,9 +1812,6 @@
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 @@
*/
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) &&