[PATCH 46/97] i386/acpi: show PCI Express bus on pxb-pcie expanders

[Michael Roth]

From: Evgeny Yakovlev <address@hidden>

Show PCIe host bridge PNP id with PCI host bridge as a compatible id
when expanding a pcie bus.

Cc: address@hidden
Signed-off-by: Evgeny Yakovlev <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
(cherry picked from commit ee4b0c8686f781987879508d7c6dd605b5435bac)
Signed-off-by: Michael Roth <address@hidden>
---
 hw/i386/acpi-build.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 416da318ae..ede27ab3c4 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1895,10 +1895,13 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
             scope = aml_scope("\\_SB");
             dev = aml_device("PC%.02X", bus_num);
             aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
-            aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
             aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
             if (pci_bus_is_express(bus)) {
+                aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
+                aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
                 aml_append(dev, build_q35_osc_method());
+            } else {
+                aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
             }
 
             if (numa_node != NUMA_NODE_UNASSIGNED) {
-- 
2.17.1