4.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
commit a2022001cebd0825b96aa0f3345ea3ad44ae79d4 upstream.
Tolerance applies on both sides of the target voltage, i.e. both min and
max sides. But while checking if a voltage is supported by the regulator
or not, we haven't taken care of tolerance on the lower side. Fix that.
Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Fixes: 045ee45c4ff2 ("cpufreq: cpufreq-dt: disable unsupported OPPs")
Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/cpufreq/cpufreq-dt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -255,7 +255,8 @@ static int cpufreq_init(struct cpufreq_p
rcu_read_unlock();
tol_uV = opp_uV * priv->voltage_tolerance / 100;
- if (regulator_is_supported_voltage(cpu_reg, opp_uV,
+ if (regulator_is_supported_voltage(cpu_reg,
+ opp_uV - tol_uV,
opp_uV + tol_uV)) {
if (opp_uV < min_uV)
min_uV = opp_uV;
--
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