x86/PCI/ACPI: Ignore resources consumed by host bridge itself (63f1789e) · Commits · 戴 / test

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: (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>

arch/x86/pci/acpi.c

+8 −3

Original line number	Diff line number	Diff line
		@@ -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;
		@@ -345,9 +345,14 @@ 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)
		{

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