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>

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 7e56a42..285ba51 100644 (file)
--- 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);