linux-kernel - [PATCH 2/5] cpufreq: arm_big_little: don't initialize opp table

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Date:	Mon, 19 May 2014 11:47:22 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	rjw@...ysocki.net
Cc:	linaro-kernel@...ts.linaro.org, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org, arvind.chauhan@....com,
	inderpal.s@...sung.com, pavel@....cz, nm@...com,
	chander.kashyap@...aro.org, Viresh Kumar <viresh.kumar@...aro.org>,
	Sudeep Holla <sudeep.holla@....com>
Subject: [PATCH 2/5] cpufreq: arm_big_little: don't initialize opp table

OPP tables are already initialized for all CPUs by cpufreq core and so we don't
need to reinitialize them from arm_big_little_dt driver.

Also, as the arm_big_little_dt driver doesn't have a .init_opp_table() callback
anymore, make it optional in arm_big_little driver.

Cc: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/cpufreq/arm_big_little.c    | 12 +++++++-----
 drivers/cpufreq/arm_big_little_dt.c | 18 ------------------
 2 files changed, 7 insertions(+), 23 deletions(-)

diff --git a/drivers/cpufreq/arm_big_little.c b/drivers/cpufreq/arm_big_little.c
index 1f4d4e3..561261e 100644
--- a/drivers/cpufreq/arm_big_little.c
+++ b/drivers/cpufreq/arm_big_little.c
@@ -325,11 +325,13 @@ static int _get_cluster_clk_and_freq_table(struct device *cpu_dev)
 	if (freq_table[cluster])
 		return 0;
 
-	ret = arm_bL_ops->init_opp_table(cpu_dev);
-	if (ret) {
-		dev_err(cpu_dev, "%s: init_opp_table failed, cpu: %d, err: %d\n",
+	if (arm_bL_ops->init_opp_table) {
+		ret = arm_bL_ops->init_opp_table(cpu_dev);
+		if (ret) {
+			dev_err(cpu_dev, "%s: init_opp_table failed, cpu: %d, err: %d\n",
 				__func__, cpu_dev->id, ret);
-		goto out;
+			goto out;
+		}
 	}
 
 	ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table[cluster]);
@@ -542,7 +544,7 @@ int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops)
 		return -EBUSY;
 	}
 
-	if (!ops || !strlen(ops->name) || !ops->init_opp_table) {
+	if (!ops || !strlen(ops->name)) {
 		pr_err("%s: Invalid arm_bL_ops, exiting\n", __func__);
 		return -ENODEV;
 	}
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
index 8d9d591..502182d 100644
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ b/drivers/cpufreq/arm_big_little_dt.c
@@ -43,23 +43,6 @@ static struct device_node *get_cpu_node_with_valid_op(int cpu)
 	return np;
 }
 
-static int dt_init_opp_table(struct device *cpu_dev)
-{
-	struct device_node *np;
-	int ret;
-
-	np = of_node_get(cpu_dev->of_node);
-	if (!np) {
-		pr_err("failed to find cpu%d node\n", cpu_dev->id);
-		return -ENOENT;
-	}
-
-	ret = of_init_opp_table(cpu_dev);
-	of_node_put(np);
-
-	return ret;
-}
-
 static int dt_get_transition_latency(struct device *cpu_dev)
 {
 	struct device_node *np;
@@ -81,7 +64,6 @@ static int dt_get_transition_latency(struct device *cpu_dev)
 static struct cpufreq_arm_bL_ops dt_bL_ops = {
 	.name	= "dt-bl",
 	.get_transition_latency = dt_get_transition_latency,
-	.init_opp_table = dt_init_opp_table,
 };
 
 static int generic_bL_probe(struct platform_device *pdev)
-- 
2.0.0.rc2

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