From: "hongbo.zhang" <hongbo.zh...@linaro.com>
The cpufreq works as a cooling device, so the cooling layer should check if the
cpufreq driver is initialized or not.
Signed-off-by: hongbo.zhang <hongbo.zh...@linaro.com>
---
drivers/thermal/cpu_cooling.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index b6b4c2a..7519a0b 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -354,6 +354,10 @@ struct thermal_cooling_device *cpufreq_cooling_register(
int ret = 0, i;
struct cpufreq_policy policy;
+ /* make sure cpufreq driver has been initialized */
+ if (!cpufreq_frequency_get_table(cpumask_any(clip_cpus)))
+ return ERR_PTR(-EPROBE_DEFER);
+
list_for_each_entry(cpufreq_dev, &cooling_cpufreq_list, node)
cpufreq_dev_count++;
--
1.7.11.3
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