leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

serial: sh-sci: Change checking for error rate of HSCIF

Browse Source 
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>
This commit is contained in:
Nobuhiro Iwamatsu 2014-11-20 07:58:27 +09:00 committed by Greg Kroah-Hartman
parent 681b05f58f
commit f53297fb99
1 changed files with 1 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/tty/serial/sh-sci.c
View File

@ -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) &&