cpufreq: tegra194: remove opp table in exit hook

[ Upstream commit de0e85b ] 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: f41e144 ("cpufreq: tegra194: add OPP support and set bandwidth") Signed-off-by: Sumit Gupta <[email protected]> [ Viresh: Dropped irrelevant change from it ] Signed-off-by: Viresh Kumar <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
chewitt · Sep 13, 2023 · 002a658 · 002a658
1 parent 88dbf43
commit 002a658
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/drivers/cpufreq/tegra194-cpufreq.c b/drivers/cpufreq/tegra194-cpufreq.c
@@ -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,