提交 727ae8be 编写于 作者: L Liu Jiang 提交者: Rafael J. Wysocki

x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69

Commit 4d6b4e69 ("x86/PCI/ACPI: Use common interface to support
PCI host bridge") converted x86 to use the common interface
acpi_pci_root_create, but the conversion missed on code piece in
arch/x86/pci/bus_numa.c, which causes regression on some legacy
AMD platforms as reported by Arthur Marsh <arthur.marsh@internode.on.net>.
The root causes is that acpi_pci_root_create() fails to insert
host bridge resources into iomem_resource/ioport_resource because
x86_pci_root_bus_resources() has already inserted those resources.
So change x86_pci_root_bus_resources() to not insert resources into
iomem_resource/ioport_resource.

Fixes: 4d6b4e69 ("x86/PCI/ACPI: Use common interface to support PCI host bridge")
Signed-off-by: NJiang Liu <jiang.liu@linux.intel.com>
Reported-and-tested-by: NArthur Marsh <arthur.marsh@internode.on.net>
Reported-and-tested-by: NKrzysztof Kolasa <kkolasa@winsoft.pl>
Reported-and-tested-by: NKeith Busch <keith.busch@intel.com>
Reported-and-tested-by: NHans de Bruin <jmdebruin@xmsnet.nl>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
上级 768acd64
...@@ -50,18 +50,9 @@ void x86_pci_root_bus_resources(int bus, struct list_head *resources) ...@@ -50,18 +50,9 @@ void x86_pci_root_bus_resources(int bus, struct list_head *resources)
if (!found) if (!found)
pci_add_resource(resources, &info->busn); pci_add_resource(resources, &info->busn);
list_for_each_entry(root_res, &info->resources, list) { list_for_each_entry(root_res, &info->resources, list)
struct resource *res; pci_add_resource(resources, &root_res->res);
struct resource *root;
res = &root_res->res;
pci_add_resource(resources, res);
if (res->flags & IORESOURCE_IO)
root = &ioport_resource;
else
root = &iomem_resource;
insert_resource(root, res);
}
return; return;
default_resources: default_resources:
......
...@@ -768,6 +768,13 @@ static void pci_acpi_root_add_resources(struct acpi_pci_root_info *info) ...@@ -768,6 +768,13 @@ static void pci_acpi_root_add_resources(struct acpi_pci_root_info *info)
else else
continue; continue;
/*
* Some legacy x86 host bridge drivers use iomem_resource and
* ioport_resource as default resource pool, skip it.
*/
if (res == root)
continue;
conflict = insert_resource_conflict(root, res); conflict = insert_resource_conflict(root, res);
if (conflict) { if (conflict) {
dev_info(&info->bridge->dev, dev_info(&info->bridge->dev,
......
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