From 7cd9c9bb57476167e83b7780dbc06d1dd601789d Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 19 Apr 2012 19:17:30 -0700 Subject: Revert "driver core: check start node in klist_iter_init_node" This reverts commit a15d49fd3094cff90e5410ca454a870e0a722fe1 as that patch broke the build. Cc: Hannes Reinecke Reported-by: Stephen Rothwell Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 46 +++++++++++++++++----------------------------- drivers/base/class.c | 32 ++++++++++++-------------------- drivers/base/driver.c | 18 +++++++----------- 3 files changed, 36 insertions(+), 60 deletions(-) (limited to 'drivers') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 76aed01a8b2..2bcef657a60 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -296,13 +296,11 @@ int bus_for_each_dev(struct bus_type *bus, struct device *start, if (!bus) return -EINVAL; - error = klist_iter_init_node(&bus->p->klist_devices, &i, - (start ? &start->p->knode_bus : NULL)); - if (!error) { - while ((dev = next_device(&i)) && !error) - error = fn(dev, data); - klist_iter_exit(&i); - } + klist_iter_init_node(&bus->p->klist_devices, &i, + (start ? &start->p->knode_bus : NULL)); + while ((dev = next_device(&i)) && !error) + error = fn(dev, data); + klist_iter_exit(&i); return error; } EXPORT_SYMBOL_GPL(bus_for_each_dev); @@ -332,10 +330,8 @@ struct device *bus_find_device(struct bus_type *bus, if (!bus) return NULL; - if (klist_iter_init_node(&bus->p->klist_devices, &i, - (start ? &start->p->knode_bus : NULL)) < 0) - return NULL; - + klist_iter_init_node(&bus->p->klist_devices, &i, + (start ? &start->p->knode_bus : NULL)); while ((dev = next_device(&i))) if (match(dev, data) && get_device(dev)) break; @@ -388,9 +384,7 @@ struct device *subsys_find_device_by_id(struct bus_type *subsys, unsigned int id return NULL; if (hint) { - if (klist_iter_init_node(&subsys->p->klist_devices, &i, - &hint->p->knode_bus) < 0) - return NULL; + klist_iter_init_node(&subsys->p->klist_devices, &i, &hint->p->knode_bus); dev = next_device(&i); if (dev && dev->id == id && get_device(dev)) { klist_iter_exit(&i); @@ -452,13 +446,11 @@ int bus_for_each_drv(struct bus_type *bus, struct device_driver *start, if (!bus) return -EINVAL; - error = klist_iter_init_node(&bus->p->klist_drivers, &i, - start ? &start->p->knode_bus : NULL); - if (!error) { - while ((drv = next_driver(&i)) && !error) - error = fn(drv, data); - klist_iter_exit(&i); - } + klist_iter_init_node(&bus->p->klist_drivers, &i, + start ? &start->p->knode_bus : NULL); + while ((drv = next_driver(&i)) && !error) + error = fn(drv, data); + klist_iter_exit(&i); return error; } EXPORT_SYMBOL_GPL(bus_for_each_drv); @@ -1119,19 +1111,15 @@ EXPORT_SYMBOL_GPL(bus_sort_breadthfirst); * otherwise if it is NULL, the iteration starts at the beginning of * the list. */ -int subsys_dev_iter_init(struct subsys_dev_iter *iter, struct bus_type *subsys, - struct device *start, const struct device_type *type) +void subsys_dev_iter_init(struct subsys_dev_iter *iter, struct bus_type *subsys, + struct device *start, const struct device_type *type) { struct klist_node *start_knode = NULL; - int error; if (start) start_knode = &start->p->knode_bus; - error = klist_iter_init_node(&subsys->p->klist_devices, &iter->ki, - start_knode); - if (!error) - iter->type = type; - return error; + klist_iter_init_node(&subsys->p->klist_devices, &iter->ki, start_knode); + iter->type = type; } EXPORT_SYMBOL_GPL(subsys_dev_iter_init); diff --git a/drivers/base/class.c b/drivers/base/class.c index 23dbc661d4a..03243d4002f 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -301,20 +301,15 @@ void class_destroy(struct class *cls) * otherwise if it is NULL, the iteration starts at the beginning of * the list. */ -int class_dev_iter_init(struct class_dev_iter *iter, struct class *class, - struct device *start, const struct device_type *type) +void class_dev_iter_init(struct class_dev_iter *iter, struct class *class, + struct device *start, const struct device_type *type) { struct klist_node *start_knode = NULL; - int error; if (start) start_knode = &start->knode_class; - error = klist_iter_init_node(&class->p->klist_devices, &iter->ki, - start_knode); - if (!error) - iter->type = type; - - return error; + klist_iter_init_node(&class->p->klist_devices, &iter->ki, start_knode); + iter->type = type; } EXPORT_SYMBOL_GPL(class_dev_iter_init); @@ -392,15 +387,14 @@ int class_for_each_device(struct class *class, struct device *start, return -EINVAL; } - error = class_dev_iter_init(&iter, class, start, NULL); - if (!error) { - while ((dev = class_dev_iter_next(&iter))) { - error = fn(dev, data); - if (error) - break; - } - class_dev_iter_exit(&iter); + class_dev_iter_init(&iter, class, start, NULL); + while ((dev = class_dev_iter_next(&iter))) { + error = fn(dev, data); + if (error) + break; } + class_dev_iter_exit(&iter); + return error; } EXPORT_SYMBOL_GPL(class_for_each_device); @@ -440,9 +434,7 @@ struct device *class_find_device(struct class *class, struct device *start, return NULL; } - if (class_dev_iter_init(&iter, class, start, NULL) < 0) - return NULL; - + class_dev_iter_init(&iter, class, start, NULL); while ((dev = class_dev_iter_next(&iter))) { if (match(dev, data)) { get_device(dev); diff --git a/drivers/base/driver.c b/drivers/base/driver.c index 16f6dd2c440..3ec3896c83a 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -49,13 +49,11 @@ int driver_for_each_device(struct device_driver *drv, struct device *start, if (!drv) return -EINVAL; - error = klist_iter_init_node(&drv->p->klist_devices, &i, - start ? &start->p->knode_driver : NULL); - if (!error) { - while ((dev = next_device(&i)) && !error) - error = fn(dev, data); - klist_iter_exit(&i); - } + klist_iter_init_node(&drv->p->klist_devices, &i, + start ? &start->p->knode_driver : NULL); + while ((dev = next_device(&i)) && !error) + error = fn(dev, data); + klist_iter_exit(&i); return error; } EXPORT_SYMBOL_GPL(driver_for_each_device); @@ -85,10 +83,8 @@ struct device *driver_find_device(struct device_driver *drv, if (!drv) return NULL; - if (klist_iter_init_node(&drv->p->klist_devices, &i, - (start ? &start->p->knode_driver : NULL)) < 0) - return NULL; - + klist_iter_init_node(&drv->p->klist_devices, &i, + (start ? &start->p->knode_driver : NULL)); while ((dev = next_device(&i))) if (match(dev, data) && get_device(dev)) break; -- cgit v1.2.3