linux-kernel - [RFC PATCH v2 15/15] cpufreq: pmac32-cpufreq: remove device tree parsing for cpu nodes

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Date:	Wed, 17 Jul 2013 15:06:24 +0100
From:	Sudeep.KarkadaNagesha@....com
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	cpufreq@...r.kernel.org, linux-pm@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org
Cc:	Russell King <linux@....linux.org.uk>,
	Shawn Guo <shawn.guo@...aro.org>,
	Gregory Clement <gregory.clement@...e-electrons.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
	Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [RFC PATCH v2 15/15] cpufreq: pmac32-cpufreq: remove device tree parsing for cpu nodes

From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>

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

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

Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@....com>
---
 drivers/cpufreq/pmac32-cpufreq.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c
index 3104fad..b6822ee 100644
--- a/drivers/cpufreq/pmac32-cpufreq.c
+++ b/drivers/cpufreq/pmac32-cpufreq.c
@@ -21,6 +21,7 @@
 #include <linux/sched.h>
 #include <linux/adb.h>
 #include <linux/pmu.h>
+#include <linux/cpu.h>
 #include <linux/cpufreq.h>
 #include <linux/init.h>
 #include <linux/device.h>
@@ -643,6 +644,7 @@ static int pmac_cpufreq_init_750FX(struct device_node *cpunode)
  */
 static int __init pmac_cpufreq_setup(void)
 {
+	struct device *cpu_dev;
 	struct device_node	*cpunode;
 	const u32		*value;
 
@@ -650,7 +652,14 @@ static int __init pmac_cpufreq_setup(void)
 		return 0;
 
 	/* Assume only one CPU */
-	cpunode = of_find_node_by_type(NULL, "cpu");
+	cpu_dev = get_cpu_device(0);
+	if (!cpu_dev) {
+		pr_err("failed to get cpu device\n");
+		return -ENODEV;
+	}
+
+	/* Get first CPU node */
+	cpunode = of_node_get(cpu_dev->of_node);
 	if (!cpunode)
 		goto out;
 
-- 
1.8.1.2


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