1 files changed, 16 insertions, 19 deletions

diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
index 17d6a149f580..4fffc8e83692 100644
--- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
+++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
@@ -194,7 +194,9 @@ static int sun50i_cpufreq_get_efuse(void)
 	struct nvmem_cell *speedbin_nvmem;
 	const struct of_device_id *match;
 	struct device *cpu_dev;
-	u32 *speedbin;
+	void *speedbin_ptr;
+	u32 speedbin = 0;
+	size_t len;
 	int ret;
 
 	cpu_dev = get_cpu_device(0);
@@ -217,14 +219,18 @@ static int sun50i_cpufreq_get_efuse(void)
 		return dev_err_probe(cpu_dev, PTR_ERR(speedbin_nvmem),
 				     "Could not get nvmem cell\n");
 
-	speedbin = nvmem_cell_read(speedbin_nvmem, NULL);
+	speedbin_ptr = nvmem_cell_read(speedbin_nvmem, &len);
 	nvmem_cell_put(speedbin_nvmem);
-	if (IS_ERR(speedbin))
-		return PTR_ERR(speedbin);
+	if (IS_ERR(speedbin_ptr))
+		return PTR_ERR(speedbin_ptr);
 
-	ret = opp_data->efuse_xlate(*speedbin);
+	if (len <= 4)
+		memcpy(&speedbin, speedbin_ptr, len);
+	speedbin = le32_to_cpu(speedbin);
 
-	kfree(speedbin);
+	ret = opp_data->efuse_xlate(speedbin);
+
+	kfree(speedbin_ptr);
 
 	return ret;
 };
@@ -262,7 +268,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
 	snprintf(name, sizeof(name), "speed%d", speed);
 	config.prop_name = name;
 
-	for_each_possible_cpu(cpu) {
+	for_each_present_cpu(cpu) {
 		struct device *cpu_dev = get_cpu_device(cpu);
 
 		if (!cpu_dev) {
@@ -288,7 +294,7 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev)
 	pr_err("Failed to register platform device\n");
 
 free_opp:
-	for_each_possible_cpu(cpu)
+	for_each_present_cpu(cpu)
 		dev_pm_opp_clear_config(opp_tokens[cpu]);
 	kfree(opp_tokens);
 
@@ -302,7 +308,7 @@ static void sun50i_cpufreq_nvmem_remove(struct platform_device *pdev)
 
 	platform_device_unregister(cpufreq_dt_pdev);
 
-	for_each_possible_cpu(cpu)
+	for_each_present_cpu(cpu)
 		dev_pm_opp_clear_config(opp_tokens[cpu]);
 
 	kfree(opp_tokens);
@@ -326,13 +332,6 @@ static const struct of_device_id sun50i_cpufreq_match_list[] = {
 };
 MODULE_DEVICE_TABLE(of, sun50i_cpufreq_match_list);
 
-static const struct of_device_id *sun50i_cpufreq_match_node(void)
-{
-	struct device_node *np __free(device_node) = of_find_node_by_path("/");
-
-	return of_match_node(sun50i_cpufreq_match_list, np);
-}
-
 /*
  * Since the driver depends on nvmem drivers, which may return EPROBE_DEFER,
  * all the real activity is done in the probe, which may be defered as well.
@@ -340,11 +339,9 @@ static const struct of_device_id *sun50i_cpufreq_match_node(void)
  */
 static int __init sun50i_cpufreq_init(void)
 {
-	const struct of_device_id *match;
 	int ret;
 
-	match = sun50i_cpufreq_match_node();
-	if (!match)
+	if (!of_machine_device_match(sun50i_cpufreq_match_list))
 		return -ENODEV;
 
 	ret = platform_driver_register(&sun50i_cpufreq_driver);