[PATCH v9 08/30] PCI: Update pci_host_bridge bus resource

Yijing Wang
2015-04-03T09:29:06Z

From: Yijing Wang <wangyijing0307@gmail.com>

Sometimes, the bus resource start number is not equal to
root bus number. For example, in pci_scan_bus(), we always
add the default bus resource which start bus number is 0,
but the root bus number callers given may != 0, so
we need to update pci_host_bridge bus resource, because we
would check whether host bridge bus resoruce is confict
in later patch.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
drivers/pci/host-bridge.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index ecc1a7c..1a9834b 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -26,8 +26,11 @@ static void pci_host_update_busn_res(
struct resource_entry *window;

resource_list_for_each_entry(window, resources)
- if (window->res->flags & IORESOURCE_BUS)
+ if (window->res->flags & IORESOURCE_BUS) {
+ if (bus > window->res->start)
+ window->res->start = bus;
return;
+ }

pr_info(
"No busn resource found for pci%04x:%02x, will use [bus %02x-ff]\n",
--
1.7.1