From 3c792e0fe17858105b72516f709c48fc8e4a7523 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Mon, 29 Apr 2013 13:24:46 +0000 Subject: [PATCH] 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 Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/arm_big_little_dt.c | 7 ++++--- 1 file 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 = {