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-rw-r--r--drivers/base/base.h4
-rw-r--r--drivers/base/bus.c40
2 files changed, 31 insertions, 13 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 4fc5fd3984cc..ddc97496db4a 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -69,6 +69,7 @@ struct class_private {
69 * @klist_children - klist containing all children of this device 69 * @klist_children - klist containing all children of this device
70 * @knode_parent - node in sibling list 70 * @knode_parent - node in sibling list
71 * @knode_driver - node in driver list 71 * @knode_driver - node in driver list
72 * @knode_bus - node in bus list
72 * @device - pointer back to the struct class that this structure is 73 * @device - pointer back to the struct class that this structure is
73 * associated with. 74 * associated with.
74 * 75 *
@@ -78,12 +79,15 @@ struct device_private {
78 struct klist klist_children; 79 struct klist klist_children;
79 struct klist_node knode_parent; 80 struct klist_node knode_parent;
80 struct klist_node knode_driver; 81 struct klist_node knode_driver;
82 struct klist_node knode_bus;
81 struct device *device; 83 struct device *device;
82}; 84};
83#define to_device_private_parent(obj) \ 85#define to_device_private_parent(obj) \
84 container_of(obj, struct device_private, knode_parent) 86 container_of(obj, struct device_private, knode_parent)
85#define to_device_private_driver(obj) \ 87#define to_device_private_driver(obj) \
86 container_of(obj, struct device_private, knode_driver) 88 container_of(obj, struct device_private, knode_driver)
89#define to_device_private_bus(obj) \
90 container_of(obj, struct device_private, knode_bus)
87 91
88/* initialisation functions */ 92/* initialisation functions */
89extern int devices_init(void); 93extern int devices_init(void);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 11463c00451e..dc030f1f00f1 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -253,7 +253,14 @@ static ssize_t store_drivers_probe(struct bus_type *bus,
253static struct device *next_device(struct klist_iter *i) 253static struct device *next_device(struct klist_iter *i)
254{ 254{
255 struct klist_node *n = klist_next(i); 255 struct klist_node *n = klist_next(i);
256 return n ? container_of(n, struct device, knode_bus) : NULL; 256 struct device *dev = NULL;
257 struct device_private *dev_prv;
258
259 if (n) {
260 dev_prv = to_device_private_bus(n);
261 dev = dev_prv->device;
262 }
263 return dev;
257} 264}
258 265
259/** 266/**
@@ -286,7 +293,7 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start,
286 return -EINVAL; 293 return -EINVAL;
287 294
288 klist_iter_init_node(&bus->p->klist_devices, &i, 295 klist_iter_init_node(&bus->p->klist_devices, &i,
289 (start ? &start->knode_bus : NULL)); 296 (start ? &start->p->knode_bus : NULL));
290 while ((dev = next_device(&i)) && !error) 297 while ((dev = next_device(&i)) && !error)
291 error = fn(dev, data); 298 error = fn(dev, data);
292 klist_iter_exit(&i); 299 klist_iter_exit(&i);
@@ -320,7 +327,7 @@ struct device *bus_find_device(struct bus_type *bus,
320 return NULL; 327 return NULL;
321 328
322 klist_iter_init_node(&bus->p->klist_devices, &i, 329 klist_iter_init_node(&bus->p->klist_devices, &i,
323 (start ? &start->knode_bus : NULL)); 330 (start ? &start->p->knode_bus : NULL));
324 while ((dev = next_device(&i))) 331 while ((dev = next_device(&i)))
325 if (match(dev, data) && get_device(dev)) 332 if (match(dev, data) && get_device(dev))
326 break; 333 break;
@@ -507,7 +514,8 @@ void bus_attach_device(struct device *dev)
507 ret = device_attach(dev); 514 ret = device_attach(dev);
508 WARN_ON(ret < 0); 515 WARN_ON(ret < 0);
509 if (ret >= 0) 516 if (ret >= 0)
510 klist_add_tail(&dev->knode_bus, &bus->p->klist_devices); 517 klist_add_tail(&dev->p->knode_bus,
518 &bus->p->klist_devices);
511 } 519 }
512} 520}
513 521
@@ -528,8 +536,8 @@ void bus_remove_device(struct device *dev)
528 sysfs_remove_link(&dev->bus->p->devices_kset->kobj, 536 sysfs_remove_link(&dev->bus->p->devices_kset->kobj,
529 dev_name(dev)); 537 dev_name(dev));
530 device_remove_attrs(dev->bus, dev); 538 device_remove_attrs(dev->bus, dev);
531 if (klist_node_attached(&dev->knode_bus)) 539 if (klist_node_attached(&dev->p->knode_bus))
532 klist_del(&dev->knode_bus); 540 klist_del(&dev->p->knode_bus);
533 541
534 pr_debug("bus: '%s': remove device %s\n", 542 pr_debug("bus: '%s': remove device %s\n",
535 dev->bus->name, dev_name(dev)); 543 dev->bus->name, dev_name(dev));
@@ -831,14 +839,16 @@ static void bus_remove_attrs(struct bus_type *bus)
831 839
832static void klist_devices_get(struct klist_node *n) 840static void klist_devices_get(struct klist_node *n)
833{ 841{
834 struct device *dev = container_of(n, struct device, knode_bus); 842 struct device_private *dev_prv = to_device_private_bus(n);
843 struct device *dev = dev_prv->device;
835 844
836 get_device(dev); 845 get_device(dev);
837} 846}
838 847
839static void klist_devices_put(struct klist_node *n) 848static void klist_devices_put(struct klist_node *n)
840{ 849{
841 struct device *dev = container_of(n, struct device, knode_bus); 850 struct device_private *dev_prv = to_device_private_bus(n);
851 struct device *dev = dev_prv->device;
842 852
843 put_device(dev); 853 put_device(dev);
844} 854}
@@ -995,18 +1005,20 @@ static void device_insertion_sort_klist(struct device *a, struct list_head *list
995{ 1005{
996 struct list_head *pos; 1006 struct list_head *pos;
997 struct klist_node *n; 1007 struct klist_node *n;
1008 struct device_private *dev_prv;
998 struct device *b; 1009 struct device *b;
999 1010
1000 list_for_each(pos, list) { 1011 list_for_each(pos, list) {
1001 n = container_of(pos, struct klist_node, n_node); 1012 n = container_of(pos, struct klist_node, n_node);
1002 b = container_of(n, struct device, knode_bus); 1013 dev_prv = to_device_private_bus(n);
1014 b = dev_prv->device;
1003 if (compare(a, b) <= 0) { 1015 if (compare(a, b) <= 0) {
1004 list_move_tail(&a->knode_bus.n_node, 1016 list_move_tail(&a->p->knode_bus.n_node,
1005 &b->knode_bus.n_node); 1017 &b->p->knode_bus.n_node);
1006 return; 1018 return;
1007 } 1019 }
1008 } 1020 }
1009 list_move_tail(&a->knode_bus.n_node, list); 1021 list_move_tail(&a->p->knode_bus.n_node, list);
1010} 1022}
1011 1023
1012void bus_sort_breadthfirst(struct bus_type *bus, 1024void bus_sort_breadthfirst(struct bus_type *bus,
@@ -1016,6 +1028,7 @@ void bus_sort_breadthfirst(struct bus_type *bus,
1016 LIST_HEAD(sorted_devices); 1028 LIST_HEAD(sorted_devices);
1017 struct list_head *pos, *tmp; 1029 struct list_head *pos, *tmp;
1018 struct klist_node *n; 1030 struct klist_node *n;
1031 struct device_private *dev_prv;
1019 struct device *dev; 1032 struct device *dev;
1020 struct klist *device_klist; 1033 struct klist *device_klist;
1021 1034
@@ -1024,7 +1037,8 @@ void bus_sort_breadthfirst(struct bus_type *bus,
1024 spin_lock(&device_klist->k_lock); 1037 spin_lock(&device_klist->k_lock);
1025 list_for_each_safe(pos, tmp, &device_klist->k_list) { 1038 list_for_each_safe(pos, tmp, &device_klist->k_list) {
1026 n = container_of(pos, struct klist_node, n_node); 1039 n = container_of(pos, struct klist_node, n_node);
1027 dev = container_of(n, struct device, knode_bus); 1040 dev_prv = to_device_private_bus(n);
1041 dev = dev_prv->device;
1028 device_insertion_sort_klist(dev, &sorted_devices, compare); 1042 device_insertion_sort_klist(dev, &sorted_devices, compare);
1029 } 1043 }
1030 list_splice(&sorted_devices, &device_klist->k_list); 1044 list_splice(&sorted_devices, &device_klist->k_list);