From eb1ed2b19befecdfeddb394e6174bb2198f2a49b Mon Sep 17 00:00:00 2001
From: Ludovic Desroches <ludovic.desroches@microchip.com>
Date: Fri, 17 Nov 2017 14:50:21 +0800
Subject: [PATCH] clk: at91: clk-generated: select absolute closest rate
To get the same behavior as the Linux driver, instead of selecting
the closest inferior rate, select the closest inferior or superior
rate
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Wenyou Yang <wenyou.yang@microchip.com>
---
drivers/clk/at91/clk-generated.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/clk/at91/clk-generated.c b/drivers/clk/at91/clk-generated.c
index 8c9a3cb053..461b5b2c9a 100644
--- a/drivers/clk/at91/clk-generated.c
+++ b/drivers/clk/at91/clk-generated.c
@@ -98,9 +98,7 @@ static ulong generic_clk_set_rate(struct clk *clk, ulong rate)
for (div = 1; div < GENERATED_MAX_DIV + 2; div++) {
tmp_rate = DIV_ROUND_CLOSEST(parent_rate, div);
- if (rate < tmp_rate)
- continue;
- tmp_diff = rate - tmp_rate;
+ tmp_diff = abs(rate - tmp_rate);
if (best_diff < 0 || best_diff > tmp_diff) {
best_rate = tmp_rate;
--
2.39.5