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cpufreq: use correct unit when verify cur freq 

[ Upstream commit 44295af501 ]

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: f55ae08c89 ("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>
This commit is contained in:
Sanjay Chandrashekara 2023-04-18 17:04:54 +05:30 committed by Greg Kroah-Hartman
parent 0985838a9c
commit 2f51bac276
1 changed files with 1 additions and 1 deletions
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drivers/cpufreq/cpufreq.c
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@ -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);