From foo@baz Tue Apr 9 12:12:43 2002 Date: Thu, 1 Nov 2007 19:41:16 -0700 To: Greg KH From: Greg Kroah-Hartman Subject: driver core: add way to get to bus device klist This allows an easier way to get to the device klist associated with a struct bus_type (you have three to choose from...) This will make it easier to move these fields to be dynamic in a future patch. The only user of this is the PCI core which horribly abuses this interface to rearrange the order of the pci devices. This should be done using the existing bus device walking functions, but that's left for future patches. Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 6 ++++++ drivers/pci/probe.c | 11 +++++++---- include/linux/device.h | 1 + 3 files changed, 14 insertions(+), 4 deletions(-) --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -941,6 +941,12 @@ struct kset *bus_get_kset(struct bus_typ } EXPORT_SYMBOL_GPL(bus_get_kset); +struct klist *bus_get_device_klist(struct bus_type *bus) +{ + return &bus->klist_devices; +} +EXPORT_SYMBOL_GPL(bus_get_device_klist); + int __init buses_init(void) { bus_kset = kset_create_and_add("bus", &bus_uevent_ops, NULL); --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1228,16 +1228,19 @@ static void __init pci_sort_breadthfirst struct klist_node *n; struct device *dev; struct pci_dev *pdev; + struct klist *device_klist; - spin_lock(&pci_bus_type.klist_devices.k_lock); - list_for_each_safe(pos, tmp, &pci_bus_type.klist_devices.k_list) { + device_klist = bus_get_device_klist(&pci_bus_type); + + spin_lock(&device_klist->k_lock); + list_for_each_safe(pos, tmp, &device_klist->k_list) { n = container_of(pos, struct klist_node, n_node); dev = container_of(n, struct device, knode_bus); pdev = to_pci_dev(dev); pci_insertion_sort_klist(pdev, &sorted_devices); } - list_splice(&sorted_devices, &pci_bus_type.klist_devices.k_list); - spin_unlock(&pci_bus_type.klist_devices.k_lock); + list_splice(&sorted_devices, &device_klist->k_list); + spin_unlock(&device_klist->k_lock); } static void __init pci_insertion_sort_devices(struct pci_dev *a, struct list_head *list) --- a/include/linux/device.h +++ b/include/linux/device.h @@ -118,6 +118,7 @@ extern int bus_unregister_notifier(struc unbound */ extern struct kset *bus_get_kset(struct bus_type *bus); +extern struct klist *bus_get_device_klist(struct bus_type *bus); struct device_driver { const char * name;