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x86/PCI/ACPI: Ignore resources consumed by host bridge itself

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When parsing resources for PCI host bridge, we should ignore resources
consumed by host bridge itself and only report window resources available
to child PCI busses.

Fixes: 593669c2ac (x86/PCI/ACPI: Use common ACPI resource interfaces ...)
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jiang Liu 2015-03-04 16:47:11 +08:00 committed by Rafael J. Wysocki
parent f1651a2428
commit 63f1789ec7
1 changed files with 8 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

9
arch/x86/pci/acpi.c
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@ -331,7 +331,7 @@ static void probe_pci_root_info(struct pci_root_info *info,
struct list_head *list)
{
int ret;
struct resource_entry *entry;
struct resource_entry *entry, *tmp;
sprintf(info->name, "PCI Bus %04x:%02x", domain, busnum);
info->bridge = device;
@ -345,8 +345,13 @@ static void probe_pci_root_info(struct pci_root_info *info,
dev_dbg(&device->dev,
"no IO and memory resources present in _CRS\n");
else
resource_list_for_each_entry(entry, list)
resource_list_for_each_entry_safe(entry, tmp, list) {
if ((entry->res->flags & IORESOURCE_WINDOW) == 0 ||
(entry->res->flags & IORESOURCE_DISABLED))
resource_list_destroy_entry(entry);
else
entry->res->name = info->name;
}
}
struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)