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Subject[PATCH 2/2] cpufreq: Remove ->resolve_freq()
Date
commit e3c062360870 ("cpufreq: add cpufreq_driver_resolve_freq()")
introduced this callback, back in 2016, for drivers that provide the
->target() callback.

The kernel haven't seen a single user of the same in the past 5 years
and there is little hope that it will be used anytime soon.

Lets remove it for now.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
Documentation/cpu-freq/cpu-drivers.rst | 3 ---
.../zh_CN/cpu-freq/cpu-drivers.rst | 2 --
drivers/cpufreq/cpufreq.c | 21 +++++++------------
include/linux/cpufreq.h | 9 --------
4 files changed, 8 insertions(+), 27 deletions(-)

diff --git a/Documentation/cpu-freq/cpu-drivers.rst b/Documentation/cpu-freq/cpu-drivers.rst
index a697278ce190..5ee49820d48a 100644
--- a/Documentation/cpu-freq/cpu-drivers.rst
+++ b/Documentation/cpu-freq/cpu-drivers.rst
@@ -58,9 +58,6 @@ And optionally

.driver_data - cpufreq driver specific data.

- .resolve_freq - Returns the most appropriate frequency for a target
- frequency. Doesn't change the frequency though.
-
.get_intermediate and target_intermediate - Used to switch to stable
frequency while changing CPU frequency.

diff --git a/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst b/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
index 0ca2cb646666..f906a4e5a3ac 100644
--- a/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
+++ b/Documentation/translations/zh_CN/cpu-freq/cpu-drivers.rst
@@ -64,8 +64,6 @@ 并且可选择

.driver_data - cpufreq驱动程序的特定数据。

- .resolve_freq - 返回最适合目标频率的频率。不过并不能改变频率。
-
.get_intermediate 和 target_intermediate - 用于在改变CPU频率时切换到稳定
的频率。

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index d691c6c97c79..b106191d84b1 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -527,22 +527,17 @@ EXPORT_SYMBOL_GPL(cpufreq_disable_fast_switch);
static unsigned int __resolve_freq(struct cpufreq_policy *policy,
unsigned int target_freq, unsigned int relation)
{
- target_freq = clamp_val(target_freq, policy->min, policy->max);
- policy->cached_target_freq = target_freq;
+ unsigned int idx;

- if (cpufreq_driver->target_index) {
- unsigned int idx;
-
- idx = cpufreq_frequency_table_target(policy, target_freq,
- relation);
- policy->cached_resolved_idx = idx;
- return policy->freq_table[idx].frequency;
- }
+ target_freq = clamp_val(target_freq, policy->min, policy->max);

- if (cpufreq_driver->resolve_freq)
- return cpufreq_driver->resolve_freq(policy, target_freq);
+ if (!cpufreq_driver->target_index)
+ return target_freq;

- return target_freq;
+ idx = cpufreq_frequency_table_target(policy, target_freq, relation);
+ policy->cached_resolved_idx = idx;
+ policy->cached_target_freq = target_freq;
+ return policy->freq_table[idx].frequency;
}

/**
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 353969c7acd3..18f0ddf7347a 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -330,15 +330,6 @@ struct cpufreq_driver {
unsigned long target_perf,
unsigned long capacity);

- /*
- * Caches and returns the lowest driver-supported frequency greater than
- * or equal to the target frequency, subject to any driver limitations.
- * Does not set the frequency. Only to be implemented for drivers with
- * target().
- */
- unsigned int (*resolve_freq)(struct cpufreq_policy *policy,
- unsigned int target_freq);
-
/*
* Only for drivers with target_index() and CPUFREQ_ASYNC_NOTIFICATION
* unset.
--
2.31.1.272.g89b43f80a514
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