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Thermal: List thermal_instance in thermal_cooling_device.

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List thermal_instance in thermal_cooling_device so that
cooling device can know the cooling state requirement
of all the thermal instances.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
This commit is contained in:
Zhang Rui 2012-06-27 14:11:52 +08:00
parent cddf31b3b2
commit b5e4ae620b
2 changed files with 7 additions and 1 deletions
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7
drivers/thermal/thermal_sys.c
View File

@ -57,6 +57,7 @@ struct thermal_instance {
char attr_name[THERMAL_NAME_LENGTH];
struct device_attribute attr;
struct list_head tz_node; /* node in tz->thermal_instances */
struct list_head cdev_node; /* node in cdev->thermal_instances */
};
static DEFINE_IDR(thermal_tz_idr);
@ -878,8 +879,10 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
result = -EEXIST;
break;
}
if (!result)
if (!result) {
list_add_tail(&dev->tz_node, &tz->thermal_instances);
list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
}
mutex_unlock(&tz->lock);
if (!result)
@ -915,6 +918,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
list_del(&pos->tz_node);
list_del(&pos->cdev_node);
mutex_unlock(&tz->lock);
goto unbind;
}
@ -984,6 +988,7 @@ thermal_cooling_device_register(char *type, void *devdata,
}
strcpy(cdev->type, type);
INIT_LIST_HEAD(&cdev->thermal_instances);
cdev->ops = ops;
cdev->device.class = &thermal_class;
cdev->devdata = devdata;

1
include/linux/thermal.h
View File

@ -94,6 +94,7 @@ struct thermal_cooling_device {
struct device device;
void *devdata;
const struct thermal_cooling_device_ops *ops;
struct list_head thermal_instances;
struct list_head node;
};