Commit 2421d4c3 authored by Sudeep KarkadaNagesha's avatar Sudeep KarkadaNagesha
Browse files

cpufreq: maple-cpufreq: 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.

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarSudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
parent da0eb143

drivers/cpufreq/maple-cpufreq.c

+3 −20
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ 
#include <linux/completion.h>

#include <linux/mutex.h>

#include <linux/time.h>

#include <linux/of.h>

#include <linux/of_device.h>



#define DBG(fmt...) pr_debug(fmt)
@@ -201,7 +201,6 @@ static struct cpufreq_driver maple_cpufreq_driver = { 


static int __init maple_cpufreq_init(void)

{

	struct device_node *cpus;

	struct device_node *cpunode;

	unsigned int psize;

	unsigned long max_freq;
@@ -217,24 +216,11 @@ static int __init maple_cpufreq_init(void) 
	    !of_machine_is_compatible("Momentum,Apache"))

		return 0;



	cpus = of_find_node_by_path("/cpus");

	if (cpus == NULL) {

		DBG("No /cpus node !\n");

		return -ENODEV;

	}



	/* Get first CPU node */

	for (cpunode = NULL;

	     (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) {

		const u32 *reg = of_get_property(cpunode, "reg", NULL);

		if (reg == NULL || (*reg) != 0)

			continue;

		if (!strcmp(cpunode->type, "cpu"))

			break;

	}

	cpunode = of_cpu_device_node_get(0);

	if (cpunode == NULL) {

		printk(KERN_ERR "cpufreq: Can't find any CPU 0 node\n");

		goto bail_cpus;

		goto bail_noprops;

	}



	/* Check 970FX for now */
@@ -290,14 +276,11 @@ static int __init maple_cpufreq_init(void) 
	rc = cpufreq_register_driver(&maple_cpufreq_driver);



	of_node_put(cpunode);

	of_node_put(cpus);



	return rc;



bail_noprops:

	of_node_put(cpunode);

bail_cpus:

	of_node_put(cpus);



	return rc;

}

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