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

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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: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Viresh Kumar 2013-04-29 13:24:46 +00:00 committed by Rafael J. Wysocki
parent 996905f333
commit 3c792e0fe1
1 changed files with 4 additions and 3 deletions
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7
drivers/cpufreq/arm_big_little_dt.c
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@ -66,8 +66,8 @@ static int dt_get_transition_latency(struct device *cpu_dev)
parent = of_find_node_by_path("/cpus");
if (!parent) {
pr_err("failed to find OF /cpus\n");
return -ENOENT;
pr_info("Failed to find OF /cpus. Use CPUFREQ_ETERNAL transition latency\n");
return CPUFREQ_ETERNAL;
}
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 -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 = {