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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-04-29 13:24:46 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-05-12 14:04:15 +0200 |
| commit | 3c792e0fe17858105b72516f709c48fc8e4a7523 (patch) | |
| tree | f48fdcdcc43ef54ca89861120a51859436ac357a /drivers/cpufreq/arm_big_little_dt.c | |
| parent | 996905f3334506296c8a4bec63695bcf7a9df159 (diff) | |
| download | lwn-3c792e0fe17858105b72516f709c48fc8e4a7523.tar.gz lwn-3c792e0fe17858105b72516f709c48fc8e4a7523.zip | |
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>
Diffstat (limited to 'drivers/cpufreq/arm_big_little_dt.c')
| -rw-r--r-- | drivers/cpufreq/arm_big_little_dt.c | 7 |
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 = { |