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Commit 8424d759 authored by Yinghai Lu's avatar Yinghai Lu Committed by Jesse Barnes
Browse files

PCI: Use add_list in pcie hotplug path. 



We need add size for hot plug path when pluging in hotplug chassis
without cards.

-v2: change descriptions. make it applicable after "pci: Check bridge
     resources after resource allocation."

Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 3e6e0d80

drivers/pci/setup-bus.c

+12 −6
Original line number Diff line number Diff line
@@ -330,13 +330,14 @@ static void __assign_resources_sorted(struct resource_list *head, 
}



static void pdev_assign_resources_sorted(struct pci_dev *dev,

				 struct resource_list_x *add_head,

				 struct resource_list_x *fail_head)

{

	struct resource_list head;



	head.next = NULL;

	__dev_sort_resources(dev, &head);

	__assign_resources_sorted(&head, NULL, fail_head);

	__assign_resources_sorted(&head, add_head, fail_head);



}
@@ -1006,17 +1007,19 @@ void __ref pci_bus_assign_resources(const struct pci_bus *bus) 
EXPORT_SYMBOL(pci_bus_assign_resources);



static void __ref __pci_bridge_assign_resources(const struct pci_dev *bridge,

					 struct resource_list_x *add_head,

					 struct resource_list_x *fail_head)

{

	struct pci_bus *b;



	pdev_assign_resources_sorted((struct pci_dev *)bridge, fail_head);

	pdev_assign_resources_sorted((struct pci_dev *)bridge,

					 add_head, fail_head);



	b = bridge->subordinate;

	if (!b)

		return;



	__pci_bus_assign_resources(b, NULL, fail_head);

	__pci_bus_assign_resources(b, add_head, fail_head);



	switch (bridge->class >> 8) {

	case PCI_CLASS_BRIDGE_PCI:
@@ -1291,6 +1294,8 @@ pci_assign_unassigned_resources(void) 
void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge)

{

	struct pci_bus *parent = bridge->subordinate;

	struct resource_list_x add_list; /* list of resources that

					want additional resources */

	int tried_times = 0;

	struct resource_list_x head, *list;

	int retval;
@@ -1298,11 +1303,12 @@ void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge) 
				  IORESOURCE_PREFETCH;



	head.next = NULL;

	add_list.next = NULL;



again:

	pci_bus_size_bridges(parent);

	__pci_bridge_assign_resources(bridge, &head);



	__pci_bus_size_bridges(parent, &add_list);

	__pci_bridge_assign_resources(bridge, &add_list, &head);

	BUG_ON(add_list.next);

	tried_times++;



	if (!head.next)