2 files changed, 17 insertions, 28 deletions

diff --git a/drivers/cpuidle/cpuidle-psci.c b/drivers/cpuidle/cpuidle-psci.c
index dcf20ea5ef5e..b250d0dde760 100644
--- a/drivers/cpuidle/cpuidle-psci.c
+++ b/drivers/cpuidle/cpuidle-psci.c
@@ -16,7 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/device/faux.h>
+#include <linux/platform_device.h>
 #include <linux/psci.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_runtime.h>
@@ -428,14 +428,14 @@ deinit:
  * to register cpuidle driver then rollback to cancel all CPUs
  * registration.
  */
-static int psci_cpuidle_probe(struct faux_device *fdev)
+static int psci_cpuidle_probe(struct platform_device *pdev)
 {
 	int cpu, ret;
 	struct cpuidle_driver *drv;
 	struct cpuidle_device *dev;
 
 	for_each_present_cpu(cpu) {
-		ret = psci_idle_init_cpu(&fdev->dev, cpu);
+		ret = psci_idle_init_cpu(&pdev->dev, cpu);
 		if (ret)
 			goto out_fail;
 	}
@@ -455,36 +455,26 @@ out_fail:
 	return ret;
 }
 
-static struct faux_device_ops psci_cpuidle_ops = {
+static struct platform_driver psci_cpuidle_driver = {
 	.probe = psci_cpuidle_probe,
+	.driver = {
+		.name = "psci-cpuidle",
+	},
 };
 
-static bool __init dt_idle_state_present(void)
-{
-	struct device_node *cpu_node __free(device_node) =
-			of_cpu_device_node_get(cpumask_first(cpu_possible_mask));
-	if (!cpu_node)
-		return false;
-
-	struct device_node *state_node __free(device_node) =
-			of_get_cpu_state_node(cpu_node, 0);
-	if (!state_node)
-		return false;
-
-	return !!of_match_node(psci_idle_state_match, state_node);
-}
-
 static int __init psci_idle_init(void)
 {
-	struct faux_device *fdev;
+	struct platform_device *pdev;
+	int ret;
 
-	if (!dt_idle_state_present())
-		return 0;
+	ret = platform_driver_register(&psci_cpuidle_driver);
+	if (ret)
+		return ret;
 
-	fdev = faux_device_create("psci-cpuidle", NULL, &psci_cpuidle_ops);
-	if (!fdev) {
-		pr_err("Failed to create psci-cpuidle device\n");
-		return -ENODEV;
+	pdev = platform_device_register_simple("psci-cpuidle", -1, NULL, 0);
+	if (IS_ERR(pdev)) {
+		platform_driver_unregister(&psci_cpuidle_driver);
+		return PTR_ERR(pdev);
 	}
 
 	return 0;
diff --git a/drivers/cpuidle/dt_idle_genpd.c b/drivers/cpuidle/dt_idle_genpd.c
index d292975cc468..ed41a90eeeb7 100644
--- a/drivers/cpuidle/dt_idle_genpd.c
+++ b/drivers/cpuidle/dt_idle_genpd.c
@@ -99,7 +99,7 @@ struct generic_pm_domain *dt_idle_pd_alloc(struct device_node *np,
 	if (!pd)
 		goto out;
 
-	pd->name = kasprintf(GFP_KERNEL, "%pOF", np);
+	pd->name = kstrdup(kbasename(of_node_full_name(np)), GFP_KERNEL);
 	if (!pd->name)
 		goto free_pd;
 
@@ -112,7 +112,6 @@ struct generic_pm_domain *dt_idle_pd_alloc(struct device_node *np,
 		goto free_name;
 
 	pd->free_states = pd_free_states;
-	pd->name = kbasename(pd->name);
 	pd->states = states;
 	pd->state_count = state_count;