lkml.org 
[lkml]   [2012]   [Jan]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 05/21] PCI: Using add_list in pcie hotplug path.
Date
We need add size for hot plug path when pluging in hotplug chassis without cards.
-v2: change descriptions. make it can be applied after
pci: Check bridge resources after resource allocation.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/setup-bus.c | 18 ++++++++++++------
1 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 7757c00..97c1eda 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -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)
--
1.7.7


\
 
 \ /
  Last update: 2012-01-21 11:11    [from the cache]
©2003-2011 Jasper Spaans