1 files changed, 26 insertions, 11 deletions

diff --git a/drivers/cpufreq/pcc-cpufreq.c b/drivers/cpufreq/pcc-cpufreq.c
index 9f3fc7a073d0..73efbcf5513b 100644
--- a/drivers/cpufreq/pcc-cpufreq.c
+++ b/drivers/cpufreq/pcc-cpufreq.c
@@ -31,6 +31,7 @@
 #include <linux/cpufreq.h>
 #include <linux/compiler.h>
 #include <linux/slab.h>
+#include <linux/platform_device.h>
 
 #include <linux/acpi.h>
 #include <linux/io.h>
@@ -384,7 +385,7 @@ out_free:
 	return ret;
 }
 
-static int __init pcc_cpufreq_probe(void)
+static int __init pcc_cpufreq_evaluate(void)
 {
 	acpi_status status;
 	struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -576,20 +577,20 @@ static struct cpufreq_driver pcc_cpufreq_driver = {
 	.name = "pcc-cpufreq",
 };
 
-static int __init pcc_cpufreq_init(void)
+static int __init pcc_cpufreq_probe(struct platform_device *pdev)
 {
 	int ret;
 
 	/* Skip initialization if another cpufreq driver is there. */
 	if (cpufreq_get_current_driver())
-		return -EEXIST;
+		return -ENODEV;
 
 	if (acpi_disabled)
 		return -ENODEV;
 
-	ret = pcc_cpufreq_probe();
+	ret = pcc_cpufreq_evaluate();
 	if (ret) {
-		pr_debug("pcc_cpufreq_init: PCCH evaluation failed\n");
+		pr_debug("pcc_cpufreq_probe: PCCH evaluation failed\n");
 		return ret;
 	}
 
@@ -607,21 +608,35 @@ static int __init pcc_cpufreq_init(void)
 	return ret;
 }
 
-static void __exit pcc_cpufreq_exit(void)
+static int pcc_cpufreq_remove(struct platform_device *pdev)
 {
 	cpufreq_unregister_driver(&pcc_cpufreq_driver);
 
 	pcc_clear_mapping();
 
 	free_percpu(pcc_cpu_info);
+
+	return 0;
 }
 
-static const struct acpi_device_id __maybe_unused processor_device_ids[] = {
-	{ACPI_PROCESSOR_OBJECT_HID, },
-	{ACPI_PROCESSOR_DEVICE_HID, },
-	{},
+static struct platform_driver pcc_cpufreq_platdrv = {
+	.driver = {
+		.name	= "pcc-cpufreq",
+	},
+	.remove		= pcc_cpufreq_remove,
 };
-MODULE_DEVICE_TABLE(acpi, processor_device_ids);
+
+static int __init pcc_cpufreq_init(void)
+{
+	return platform_driver_probe(&pcc_cpufreq_platdrv, pcc_cpufreq_probe);
+}
+
+static void __exit pcc_cpufreq_exit(void)
+{
+	platform_driver_unregister(&pcc_cpufreq_platdrv);
+}
+
+MODULE_ALIAS("platform:pcc-cpufreq");
 
 MODULE_AUTHOR("Matthew Garrett, Naga Chumbalkar");
 MODULE_VERSION(PCC_VERSION);