[PATCH] thermal: cpu_cooling: Iterate over all CPUs in clip_cpu mask to get frequency table

Pi-Cheng Chen pi-cheng.chen at linaro.org
Tue Jun 30 21:07:27 PDT 2015


__cpufreq_cooling_register() might fail if some CPU other than first one in
clip_cpu mask is present earlier e.g. CPU hotplug. Iterate all CPUs in the mask
to handle this case.

Signed-off-by: Pi-Cheng Chen <pi-cheng.chen at linaro.org>
---
 drivers/thermal/cpu_cooling.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 6509c61..d5e4ea8 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -776,7 +776,13 @@ __cpufreq_cooling_register(struct device_node *np,
 	char dev_name[THERMAL_NAME_LENGTH];
 	struct cpufreq_frequency_table *pos, *table;
 	unsigned int freq, i, num_cpus;
-	int ret;
+	int ret, cpu;
+
+	for_each_cpu(cpu, clip_cpus) {
+		table = cpufreq_frequency_get_table(cpu);
+		if (table)
+			break;
+	}
 
 	table = cpufreq_frequency_get_table(cpumask_first(clip_cpus));
 	if (!table) {
-- 
1.9.1




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