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

From: Pi-Cheng Chen
Date: Wed Jul 01 2015 - 00:13:33 EST


Sorry for the mistake I made when cherry-picking the patch. Fix and resend
again.

__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@xxxxxxxxxx>
---
drivers/thermal/cpu_cooling.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 6509c61..5e90eb6 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -776,9 +776,14 @@ __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) {
pr_debug("%s: CPUFreq table not found\n", __func__);
return ERR_PTR(-EPROBE_DEFER);
--
1.9.1

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