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authorViresh Kumar <viresh.kumar@linaro.org>2013-04-29 13:24:46 +0000
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-05-12 14:04:15 +0200
commit3c792e0fe17858105b72516f709c48fc8e4a7523 (patch)
treef48fdcdcc43ef54ca89861120a51859436ac357a
parent996905f3334506296c8a4bec63695bcf7a9df159 (diff)
downloadlinux-3c792e0fe17858105b72516f709c48fc8e4a7523.tar.gz
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: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--drivers/cpufreq/arm_big_little_dt.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/cpufreq/arm_big_little_dt.c b/drivers/cpufreq/arm_big_little_dt.c
index d5ae4d2362e3..173ed059d95f 100644
--- a/drivers/cpufreq/arm_big_little_dt.c
+++ b/drivers/cpufreq/arm_big_little_dt.c
@@ -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 = {