diff mbox

[4/4] acpi, pci: add resoruce-assign code for devices under hot-added hostbridge

Message ID 20120621183944.a769aabe.izumi.taku@jp.fujitsu.com
State Superseded
Headers show

Commit Message

Taku Izumi June 21, 2012, 9:39 a.m. UTC 
Devices under hot-added hostbridge have no chance to assign resources
and to configure them, so this patch adds such code for hot-added 
hostbridges at acpi_pci_root_start().

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
---
 drivers/acpi/pci_root.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)


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diff mbox

Patch

Index: linux/drivers/acpi/pci_root.c
===================================================================
--- linux.orig/drivers/acpi/pci_root.c
+++ linux/drivers/acpi/pci_root.c
@@ -38,6 +38,7 @@ 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <acpi/apei.h>
+#include <linux/pci_hotplug.h>
 
 #define PREFIX "ACPI: "
 
@@ -644,6 +645,19 @@  end:
 static int acpi_pci_root_start(struct acpi_device *device)
 {
 	struct acpi_pci_root *root = acpi_driver_data(device);
+	struct pci_dev *pdev;
+
+	/*
+	 * Devices under hot-added hostbridge have no chance to assign
+	 * resources and to configure them, so do that here
+	 */
+	if (system_state != SYSTEM_BOOTING) {
+		pci_bus_size_bridges(root->bus);
+		pci_bus_assign_resources(root->bus);
+		list_for_each_entry(pdev, &root->bus->devices, bus_list)
+			pci_configure_slot(pdev);
+		pci_enable_bridges(root->bus);
+	}
 
 	pci_bus_add_devices(root->bus);
 	return 0;