linux-kernel - [PATCH] cpufreq_ondemand: fix bad auto calculated frequency.

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Date:   Fri, 27 Aug 2021 16:17:53 +0800
From:   schspa <schspa@...il.com>
To:     rjw@...ysocki.net, viresh.kumar@...aro.org
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        schspa <schspa@...il.com>
Subject: [PATCH] cpufreq_ondemand: fix bad auto calculated frequency.

We can litmit cpufreq range by change min & max from cpufreq_policy.
So cpu frequency target should be in range [policy->min, policy->max].

Signed-off-by: schspa <schspa@...il.com>
---
 drivers/cpufreq/cpufreq_ondemand.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index ac361a8b1d3b..8afb2c84c38c 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -151,8 +151,8 @@ static void od_update(struct cpufreq_policy *policy)
 		/* Calculate the next frequency proportional to load */
 		unsigned int freq_next, min_f, max_f;
 
-		min_f = policy->cpuinfo.min_freq;
-		max_f = policy->cpuinfo.max_freq;
+		min_f = policy->min;
+		max_f = policy->max;
 		freq_next = min_f + load * (max_f - min_f) / 100;
 
 		/* No longer fully busy, reset rate_mult */
-- 
2.29.0