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[V2,04/26] thermal: exynos: pass cpu_present_mask to cpufreq_cooling_register()

Message ID 3cdb64044ce698b11beb0bb2f9a2c9f1ad100053.1417664938.git.viresh.kumar@linaro.org
State Accepted
Commit f3764e6c187b2841971d6347f81acc1a5264a92f
Headers show

Commit Message

Viresh Kumar Dec. 4, 2014, 4:11 a.m. UTC 
cpufreq_cooling_register() expects mask of all the CPUs where frequency
constraint is applicable.

This platform has more than one CPU to which these constraints will apply and so
passing mask of only CPU0 wouldn't be sufficient. Also, this platform has a
single cluster of CPUs and the constraint applies to all CPUs.

If CPU0 is hoplugged out then we may face strange BUGs as cpu_cooling framework
isn't aware of any siblings sharing clock line.

Fix it by passing cpu_present_mask to cpufreq_cooling_register().

Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Amit Daniel Kachhap <amit.daniel@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/thermal/samsung/exynos_thermal_common.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/thermal/samsung/exynos_thermal_common.c b/drivers/thermal/samsung/exynos_thermal_common.c
index 50a1f17..6dc3815 100644
--- a/drivers/thermal/samsung/exynos_thermal_common.c
+++ b/drivers/thermal/samsung/exynos_thermal_common.c
@@ -347,7 +347,6 @@  void exynos_report_trigger(struct thermal_sensor_conf *conf)
 int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf)
 {
 	int ret;
-	struct cpumask mask_val;
 	struct exynos_thermal_zone *th_zone;
 
 	if (!sensor_conf || !sensor_conf->read_temperature) {
@@ -367,9 +366,8 @@  int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf)
 	 *	 sensor
 	 */
 	if (sensor_conf->cooling_data.freq_clip_count > 0) {
-		cpumask_set_cpu(0, &mask_val);
 		th_zone->cool_dev[th_zone->cool_dev_size] =
-					cpufreq_cooling_register(&mask_val);
+				cpufreq_cooling_register(cpu_present_mask);
 		if (IS_ERR(th_zone->cool_dev[th_zone->cool_dev_size])) {
 			ret = PTR_ERR(th_zone->cool_dev[th_zone->cool_dev_size]);
 			if (ret != -EPROBE_DEFER)