diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/base.h | 5 | ||||
| -rw-r--r-- | drivers/base/core.c | 2 | ||||
| -rw-r--r-- | drivers/base/dd.c | 18 |
3 files changed, 16 insertions, 9 deletions
diff --git a/drivers/base/base.h b/drivers/base/base.h index 2c13deae5f82..6ee17bb391a9 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -59,6 +59,10 @@ struct driver_private { * @knode_parent - node in sibling list * @knode_driver - node in driver list * @knode_bus - node in bus list + * @deferred_probe - entry in deferred_probe_list which is used to retry the + * binding of drivers which were unable to get all the resources needed by + * the device; typically because it depends on another driver getting + * probed first. * @driver_data - private pointer for driver specific info. Will turn into a * list soon. * @device - pointer back to the struct class that this structure is @@ -71,6 +75,7 @@ struct device_private { struct klist_node knode_parent; struct klist_node knode_driver; struct klist_node knode_bus; + struct list_head deferred_probe; void *driver_data; struct device *device; }; diff --git a/drivers/base/core.c b/drivers/base/core.c index d4ff7adce38c..7050a75dde38 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -644,7 +644,6 @@ void device_initialize(struct device *dev) { dev->kobj.kset = devices_kset; kobject_init(&dev->kobj, &device_ktype); - INIT_LIST_HEAD(&dev->deferred_probe); INIT_LIST_HEAD(&dev->dma_pools); mutex_init(&dev->mutex); lockdep_set_novalidate_class(&dev->mutex); @@ -922,6 +921,7 @@ int device_private_init(struct device *dev) dev->p->device = dev; klist_init(&dev->p->klist_children, klist_children_get, klist_children_put); + INIT_LIST_HEAD(&dev->p->deferred_probe); return 0; } diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 442b7641a086..9fa888e08059 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -45,7 +45,7 @@ * retry them. * * The deferred_probe_mutex must be held any time the deferred_probe_*_list - * of the (struct device*)->deferred_probe pointers are manipulated + * of the (struct device*)->p->deferred_probe pointers are manipulated */ static DEFINE_MUTEX(deferred_probe_mutex); static LIST_HEAD(deferred_probe_pending_list); @@ -58,6 +58,7 @@ static struct workqueue_struct *deferred_wq; static void deferred_probe_work_func(struct work_struct *work) { struct device *dev; + struct device_private *private; /* * This block processes every device in the deferred 'active' list. * Each device is removed from the active list and passed to @@ -72,9 +73,10 @@ static void deferred_probe_work_func(struct work_struct *work) */ mutex_lock(&deferred_probe_mutex); while (!list_empty(&deferred_probe_active_list)) { - dev = list_first_entry(&deferred_probe_active_list, - typeof(*dev), deferred_probe); - list_del_init(&dev->deferred_probe); + private = list_first_entry(&deferred_probe_active_list, + typeof(*dev->p), deferred_probe); + dev = private->device; + list_del_init(&private->deferred_probe); get_device(dev); @@ -94,9 +96,9 @@ static DECLARE_WORK(deferred_probe_work, deferred_probe_work_func); static void driver_deferred_probe_add(struct device *dev) { mutex_lock(&deferred_probe_mutex); - if (list_empty(&dev->deferred_probe)) { + if (list_empty(&dev->p->deferred_probe)) { dev_dbg(dev, "Added to deferred list\n"); - list_add(&dev->deferred_probe, &deferred_probe_pending_list); + list_add(&dev->p->deferred_probe, &deferred_probe_pending_list); } mutex_unlock(&deferred_probe_mutex); } @@ -104,9 +106,9 @@ static void driver_deferred_probe_add(struct device *dev) void driver_deferred_probe_del(struct device *dev) { mutex_lock(&deferred_probe_mutex); - if (!list_empty(&dev->deferred_probe)) { + if (!list_empty(&dev->p->deferred_probe)) { dev_dbg(dev, "Removed from deferred list\n"); - list_del_init(&dev->deferred_probe); + list_del_init(&dev->p->deferred_probe); } mutex_unlock(&deferred_probe_mutex); } |