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| author |   Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> | 2016-04-19 15:28:00 +0530 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-04-27 23:56:58 +0200 |
| commit | 2920e9ce8f43a946e3c257a7c0ee35b02149fca7 (patch) | |
| tree | 484f63d6567bcdc435b8a49b9ae88ee3e20f0dc9 /drivers/cpufreq/powernv-cpufreq.c | |
| parent | cpufreq: e_powersaver: Use IS_ENABLED() instead of checking for built-in or module (diff) | |
| download | linux-dev-2920e9ce8f43a946e3c257a7c0ee35b02149fca7.tar.xz linux-dev-2920e9ce8f43a946e3c257a7c0ee35b02149fca7.zip | |
cpufreq: powernv: Remove flag use-case of policy->driver_data
commit 1b0289848d5d ("cpufreq: powernv: Add sysfs attributes to show
throttle stats") used policy->driver_data as a flag for one-time creation
of throttle sysfs files. Instead of this use 'kernfs_find_and_get()' to
check if the attribute already exists. This is required as
policy->driver_data is used for other purposes in the later patch.
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/powernv-cpufreq.c')
| -rw-r--r-- | drivers/cpufreq/powernv-cpufreq.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c index 39ac78c94be0..e2e221904d25 100644 --- a/drivers/cpufreq/powernv-cpufreq.c +++ b/drivers/cpufreq/powernv-cpufreq.c @@ -455,13 +455,15 @@ static int powernv_cpufreq_target_index(struct cpufreq_policy *policy, static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy) { int base, i; + struct kernfs_node *kn; base = cpu_first_thread_sibling(policy->cpu); for (i = 0; i < threads_per_core; i++) cpumask_set_cpu(base + i, policy->cpus); - if (!policy->driver_data) { + kn = kernfs_find_and_get(policy->kobj.sd, throttle_attr_grp.name); + if (!kn) { int ret; ret = sysfs_create_group(&policy->kobj, &throttle_attr_grp); @@ -470,11 +472,8 @@ static int powernv_cpufreq_cpu_init(struct cpufreq_policy *policy) policy->cpu); return ret; } - /* - * policy->driver_data is used as a flag for one-time - * creation of throttle sysfs files. - */ - policy->driver_data = policy; + } else { + kernfs_put(kn); } return cpufreq_table_validate_and_show(policy, powernv_freqs); } |