hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yinghai Lu 2012-01-21 02:08:21 -08:00 committed by Jesse Barnes
parent 3e6e0d8094
commit 8424d7592e
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/pci/setup-bus.c
View File

@ -330,13 +330,14 @@ requested_and_reassign:
}
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 @@ enable_and_dump:
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)