38#define PREFIX "Thermal: "
39
40struct thermal_cooling_device_instance {
41 int id;
42 char name[THERMAL_NAME_LENGTH];
43 struct thermal_zone_device *tz;
44 struct thermal_cooling_device *cdev;
45 int trip;
46 char attr_name[THERMAL_NAME_LENGTH];
47 struct device_attribute attr;
48 struct list_head node;
49};
50
51static DEFINE_IDR(thermal_tz_idr);
52static DEFINE_IDR(thermal_cdev_idr);
53static DEFINE_MUTEX(thermal_idr_lock);
54
55static LIST_HEAD(thermal_tz_list);
56static LIST_HEAD(thermal_cdev_list);
57static DEFINE_MUTEX(thermal_list_lock);
58
59static int get_idr(struct idr *idr, struct mutex *lock, int *id)
60{
61 int err;
62
63 again:
64 if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
65 return -ENOMEM;
66
67 if (lock)
68 mutex_lock(lock);
69 err = idr_get_new(idr, NULL, id);
70 if (lock)
71 mutex_unlock(lock);
72 if (unlikely(err == -EAGAIN))
73 goto again;
74 else if (unlikely(err))
75 return err;
76
77 *id = *id & MAX_ID_MASK;
78 return 0;