| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 146/156] cpufreq: dt: Tolerance applies on both sides of target voltage | Date | Tue, 20 Oct 2015 14:38:07 -0700 |
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3.19.8-ckt8 -stable review patch. If anyone has any objections, please let me know.
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From: Viresh Kumar <viresh.kumar@linaro.org>
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@pengutronix.de> Fixes: 045ee45c4ff2 ("cpufreq: cpufreq-dt: disable unsupported OPPs") Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/cpufreq/cpufreq-dt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index fde97d6..3ad3d64 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -255,7 +255,8 @@ static int cpufreq_init(struct cpufreq_policy *policy) 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; -- 1.9.1
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