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cpufreq: Simplify core code related to boost support

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Notice that the boost_supported field in struct cpufreq_driver is
redundant, because the driver's ->set_boost callback may be left
unset if "boost" is not supported.  Moreover, the only driver
populating the ->set_boost callback is acpi_cpufreq, so make it
avoid populating that callback if "boost" is not supported, rework
the core to check ->set_boost instead of boost_supported to
verify "boost" support and drop boost_supported which isn't
used any more.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Rafael J. Wysocki
2015-12-27 00:27:38 +01:00
parent 17135782b8
commit 7a6c79f2fe
3 changed files with 9 additions and 19 deletions
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5
drivers/cpufreq/acpi-cpufreq.c
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@@ -164,7 +164,7 @@ static ssize_t store_cpb(struct cpufreq_policy *policy, const char *buf,
int ret;
unsigned int val = 0;
if (!acpi_cpufreq_driver.boost_supported)
if (!acpi_cpufreq_driver.set_boost)
return -EINVAL;
ret = kstrtouint(buf, 10, &val);
@@ -900,7 +900,6 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
.resume = acpi_cpufreq_resume,
.name = "acpi-cpufreq",
.attr = acpi_cpufreq_attr,
.set_boost = set_boost,
};
static void __init acpi_cpufreq_boost_init(void)
@@ -911,7 +910,7 @@ static void __init acpi_cpufreq_boost_init(void)
if (!msrs)
return;
acpi_cpufreq_driver.boost_supported = true;
acpi_cpufreq_driver.set_boost = set_boost;
acpi_cpufreq_driver.boost_enabled = boost_state(0);
cpu_notifier_register_begin();