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cpufreq: tegra194: remove opp table in exit hook

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Add exit hook and remove OPP table when the device gets unregistered.
This will fix the error messages when the CPU FREQ driver module is
removed and then re-inserted. It also fixes these messages while
onlining the first CPU from a policy whose all CPU's were previously
offlined.

 debugfs: File 'cpu5' in directory 'opp' already present!
 debugfs: File 'cpu6' in directory 'opp' already present!
 debugfs: File 'cpu7' in directory 'opp' already present!

Fixes: f41e1442ac ("cpufreq: tegra194: add OPP support and set bandwidth")
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
[ Viresh: Dropped irrelevant change from it ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Sumit Gupta 2023-08-25 16:46:17 +05:30 committed by Viresh Kumar
parent 03997da042
commit de0e85b29e
1 changed files with 12 additions and 0 deletions
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12
drivers/cpufreq/tegra194-cpufreq.c
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@ -520,6 +520,17 @@ static int tegra194_cpufreq_offline(struct cpufreq_policy *policy)
* Preserve policy->driver_data and don't free resources on light-weight
* tear down.
*/
return 0;
}
static int tegra194_cpufreq_exit(struct cpufreq_policy *policy)
{
struct device *cpu_dev = get_cpu_device(policy->cpu);
dev_pm_opp_remove_all_dynamic(cpu_dev);
dev_pm_opp_of_cpumask_remove_table(policy->related_cpus);
return 0;
}
@ -550,6 +561,7 @@ static struct cpufreq_driver tegra194_cpufreq_driver = {
.target_index = tegra194_cpufreq_set_target,
.get = tegra194_get_speed,
.init = tegra194_cpufreq_init,
.exit = tegra194_cpufreq_exit,
.online = tegra194_cpufreq_online,
.offline = tegra194_cpufreq_offline,
.attr = cpufreq_generic_attr,