From 2f51bac2767837831e050997ebfe4a5f51272a24 Mon Sep 17 00:00:00 2001 From: Sanjay Chandrashekara Date: Tue, 18 Apr 2023 17:04:54 +0530 Subject: [PATCH] cpufreq: use correct unit when verify cur freq [ Upstream commit 44295af5019f1997d038ad2611086a2d1e2af167 ] cpufreq_verify_current_freq checks() if the frequency returned by the hardware has a slight delta with the valid frequency value last set and returns "policy->cur" if the delta is within "1 MHz". In the comparison, "policy->cur" is in "kHz" but it's compared against HZ_PER_MHZ. So, the comparison range becomes "1 GHz". Fix this by comparing against KHZ_PER_MHZ instead of HZ_PER_MHZ. Fixes: f55ae08c8987 ("cpufreq: Avoid unnecessary frequency updates due to mismatch") Signed-off-by: Sanjay Chandrashekara [ sumit gupta: Commit message update ] Signed-off-by: Sumit Gupta Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/cpufreq/cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 7e56a42..285ba51 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1727,7 +1727,7 @@ static unsigned int cpufreq_verify_current_freq(struct cpufreq_policy *policy, b * MHz. In such cases it is better to avoid getting into * unnecessary frequency updates. */ - if (abs(policy->cur - new_freq) < HZ_PER_MHZ) + if (abs(policy->cur - new_freq) < KHZ_PER_MHZ) return policy->cur; cpufreq_out_of_sync(policy, new_freq); -- 2.7.4