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

Message ID 1435723994-3882-1-git-send-email-pi-cheng.chen@linaro.org
State New
Headers show

Commit Message

pi-cheng.chen July 1, 2015, 4:13 a.m.
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@linaro.org>
---
 drivers/thermal/cpu_cooling.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Patch

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);