Commit 3c792e0f authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki
Browse files

cpufreq: ARM big LITTLE DT: Return CPUFREQ_ETERNAL if clock-latency isn't found 



If "/cpus" node isn't present or "clock-latency" isn't defined we are
returning error currently. Let's return CPUFREQ_ETERNAL instead, so
that we don't fail.

Flag appropriate messages to user in such cases.

Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 996905f3

drivers/cpufreq/arm_big_little_dt.c

+4 −3
Original line number Original line Diff line number Diff line
@@ -66,8 +66,8 @@ static int dt_get_transition_latency(struct device *cpu_dev) 




	parent = of_find_node_by_path("/cpus");

	parent = of_find_node_by_path("/cpus");

	if (!parent) {

	if (!parent) {

		pr_err("failed to find OF /cpus\n");

		pr_info("Failed to find OF /cpus. Use CPUFREQ_ETERNAL transition latency\n");

		return -ENOENT;

		return CPUFREQ_ETERNAL;

	}

	}





	for_each_child_of_node(parent, np) {

	for_each_child_of_node(parent, np) {
@@ -81,7 +81,8 @@ static int dt_get_transition_latency(struct device *cpu_dev) 
		return transition_latency;

		return transition_latency;

	}

	}





	return -ENODEV;

	pr_info("clock-latency isn't found, use CPUFREQ_ETERNAL transition latency\n");

	return CPUFREQ_ETERNAL;

}

}





static struct cpufreq_arm_bL_ops dt_bL_ops = {

static struct cpufreq_arm_bL_ops dt_bL_ops = {

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