cpufreq: cpufreq-cpu0: remove device tree parsing for cpu nodes

Now that the cpu device registration initialises the of_node(if available)
appropriately for all the cpus, parsing here is redundant.

This patch removes all DT parsing and uses cpu->of_node instead.

Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>

1 files changed, 4 insertions, 19 deletions

diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c
index ad1fde277661..5b05c26efb96 100644
--- a/drivers/cpufreq/cpufreq-cpu0.c
+++ b/drivers/cpufreq/cpufreq-cpu0.c
@@ -174,29 +174,17 @@ static struct cpufreq_driver cpu0_cpufreq_driver = {
 
 static int cpu0_cpufreq_probe(struct platform_device *pdev)
 {
-        struct device_node *np, *parent;
+        struct device_node *np;
         int ret;
 
-        parent = of_find_node_by_path("/cpus");
-        if (!parent) {
-                pr_err("failed to find OF /cpus\n");
-                return -ENOENT;
-        }
-
-        for_each_child_of_node(parent, np) {
-                if (of_get_property(np, "operating-points", NULL))
-                        break;
-        }
+        cpu_dev = &pdev->dev;
 
+        np = of_node_get(cpu_dev->of_node);
         if (!np) {
                 pr_err("failed to find cpu0 node\n");
-                ret = -ENOENT;
-                goto out_put_parent;
+                return -ENOENT;
         }
 
-        cpu_dev = &pdev->dev;
-        cpu_dev->of_node = np;
-
         cpu_reg = devm_regulator_get(cpu_dev, "cpu0");
         if (IS_ERR(cpu_reg)) {
                 /*
@@ -269,15 +257,12 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev)
         }
 
         of_node_put(np);
-        of_node_put(parent);
         return 0;
 
 out_free_table:
         opp_free_cpufreq_table(cpu_dev, &freq_table);
 out_put_node:
         of_node_put(np);
-out_put_parent:
-        of_node_put(parent);
         return ret;
 }