reference thermal instances 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@xxxxxxxxx>
---
drivers/thermal/thermal_sys.c | 7 ++++++-
include/linux/thermal.h | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
Index: rtd3/include/linux/thermal.h
===================================================================
--- rtd3.orig/include/linux/thermal.h
+++ rtd3/include/linux/thermal.h
@@ -86,6 +86,7 @@ struct thermal_cooling_device {
struct device device;
void *devdata;
const struct thermal_cooling_device_ops *ops;
+ struct list_head instances;
struct list_head node;
};
Index: rtd3/drivers/thermal/thermal_sys.c
===================================================================
--- rtd3.orig/drivers/thermal/thermal_sys.c
+++ rtd3/drivers/thermal/thermal_sys.c
@@ -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->instances */
+ struct list_head cdev_node; /* node in cdev->instances */
};
static DEFINE_IDR(thermal_tz_idr);
@@ -837,8 +838,10 @@ int thermal_zone_bind_cooling_device(str
result = -EEXIST;
break;
}
- if (!result)
+ if (!result) {
list_add_tail(&dev->tz_node, &tz->instances);
+ list_add_tail(&dev->cdev_node, &cdev->instances);
+ }
mutex_unlock(&tz->lock);
if (!result)
@@ -874,6 +877,7 @@ int thermal_zone_unbind_cooling_device(s
list_for_each_entry_safe(pos, next, &tz->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;
}
@@ -943,6 +947,7 @@ thermal_cooling_device_register(char *ty
}
strcpy(cdev->type, type);
+ INIT_LIST_HEAD(&cdev->instances);
cdev->ops = ops;
cdev->device.class = &thermal_class;
cdev->devdata = devdata;
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