Author: manu
Date: Fri Mar 29 19:40:04 2019
New Revision: 345711
URL: https://svnweb.freebsd.org/changeset/base/345711
Log:
arm: allwinner: clk: Fix nm_recalc
When comparing best frequencies use the absolute value.
If we do not do that we end up choosing an always lower value than
the best one if the exact freq cannot be met.
MFC after: 2 weeks
Modified:
head/sys/arm/allwinner/clkng/aw_clk_nm.c
Modified: head/sys/arm/allwinner/clkng/aw_clk_nm.c
==============================================================================
--- head/sys/arm/allwinner/clkng/aw_clk_nm.c Fri Mar 29 18:51:14 2019
(r345710)
+++ head/sys/arm/allwinner/clkng/aw_clk_nm.c Fri Mar 29 19:40:04 2019
(r345711)
@@ -155,7 +155,7 @@ aw_clk_nm_find_best(struct aw_clk_nm_sc *sc, uint64_t
for (m = min_m; m <= max_m; ) {
for (n = min_m; n <= max_n; ) {
cur = fparent / n / m;
- if ((*fout - cur) < (*fout - best)) {
+ if (abs(*fout - cur) < abs(*fout - best)) {
best = cur;
*factor_n = n;
*factor_m = m;
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