diff options
| author | Sanjay Chandrashekara | 2023-04-18 17:04:54 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-05-11 23:03:16 +0900 |
| commit | 2f51bac2767837831e050997ebfe4a5f51272a24 (patch) | |
| tree | 7e0d12d4c408627dcf1779a464904724e14b52a4 /drivers/cpufreq | |
| parent | 0985838a9c87f4870ea9135df9d339fc5846994c (diff) | |
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 <sanjayc@nvidia.com>
[ sumit gupta: Commit message update ]
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 7e56a42750ea..285ba51b31f6 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); |