From: Shilpasri G Bhat Date: Tue, 19 Apr 2016 09:58:00 +0000 (+0530) Subject: cpufreq: powernv: Remove flag use-case of policy->driver_data X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2920e9ce8f43a946e3c257a7c0ee35b02149fca7;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: Akshay Adiga Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- 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); }