Lock tz when in user facing sysfs handlers to expose sustainable power properties. This includes: sustainable_power_show() sustainable_power_store()
Cc: Zhang Rui <[email protected]> Cc: [email protected] Cc: [email protected] Signed-off-by: Eduardo Valentin <[email protected]> --- drivers/thermal/thermal_sysfs.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c index 32ffadf..5b08d64 100644 --- a/drivers/thermal/thermal_sysfs.c +++ b/drivers/thermal/thermal_sysfs.c @@ -360,9 +360,14 @@ sustainable_power_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); + unsigned int sustainable_power; + + mutex_lock(&tz->lock); + sustainable_power = tz->tzp->sustainable_power; + mutex_unlock(&tz->lock); if (tz->tzp) - return sprintf(buf, "%u\n", tz->tzp->sustainable_power); + return sprintf(buf, "%u\n", sustainable_power); else return -EIO; } @@ -380,7 +385,9 @@ sustainable_power_store(struct device *dev, struct device_attribute *devattr, if (kstrtou32(buf, 10, &sustainable_power)) return -EINVAL; + mutex_lock(&tz->lock); tz->tzp->sustainable_power = sustainable_power; + mutex_unlock(&tz->lock); return count; } -- 2.1.4
