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cpufreq: Don't create empty /sys/devices/system/cpu/cpufreq directory

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When we don't have any file in cpu/cpufreq directory we shouldn't
create it. Specially with the introduction of per-policy governor
instance patchset, even governors are moved to
cpu/cpu*/cpufreq/governor-name directory and so this directory is
just not required.

Lets have it only when required.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar
2013-05-17 16:09:09 +05:30
committed by Rafael J. Wysocki
parent 72a4ce340a
commit 2361be2366
4 changed files with 56 additions and 6 deletions
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4
drivers/cpufreq/acpi-cpufreq.c
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@@ -947,7 +947,7 @@ static void __init acpi_cpufreq_boost_init(void)
/* We create the boost file in any case, though for systems without
* hardware support it will be read-only and hardwired to return 0.
*/
if (sysfs_create_file(cpufreq_global_kobject, &(global_boost.attr)))
if (cpufreq_sysfs_create_file(&(global_boost.attr)))
pr_warn(PFX "could not register global boost sysfs file\n");
else
pr_debug("registered global boost sysfs file\n");
@@ -955,7 +955,7 @@ static void __init acpi_cpufreq_boost_init(void)
static void __exit acpi_cpufreq_boost_exit(void)
{
sysfs_remove_file(cpufreq_global_kobject, &(global_boost.attr));
cpufreq_sysfs_remove_file(&(global_boost.attr));
if (msrs) {
unregister_cpu_notifier(&boost_nb);