X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=drivers%2Facpi%2Fpci_root.c;h=5b38a026d1220113aec9c88cbb08f325537012d3;hb=c0d362a832ee70435fc4555a64f820893b1da0bd;hp=1b8f67d21d539c427f29ef2b60b34c922e780abd;hpb=2242d5eff17cf91110a3c44747f9f2e1a938cbda;p=linux-2.6-block.git

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 1b8f67d21d53..5b38a026d122 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -31,6 +31,7 @@
 #include <linux/spinlock.h>
 #include <linux/pm.h>
 #include <linux/pci.h>
+#include <linux/pci-acpi.h>
 #include <linux/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
@@ -193,6 +194,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	unsigned long long value = 0;
 	acpi_handle handle = NULL;
 	struct acpi_device *child;
+	u32 flags, base_flags;
 
 
 	if (!device)
@@ -210,6 +212,13 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 
 	device->ops.bind = acpi_pci_bind;
 
+	/*
+	 * All supported architectures that use ACPI have support for
+	 * PCI domains, so we indicate this in _OSC support capabilities.
+	 */
+	flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
+	pci_acpi_osc_support(device->handle, flags);
+
 	/* 
 	 * Segment
 	 * -------
@@ -335,6 +344,17 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	list_for_each_entry(child, &device->children, node)
 		acpi_pci_bridge_scan(child);
 
+	/* Indicate support for various _OSC capabilities. */
+	if (pci_ext_cfg_avail(root->bus->self))
+		flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
+	if (pcie_aspm_enabled())
+		flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
+			OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
+	if (pci_msi_enabled())
+		flags |= OSC_MSI_SUPPORT;
+	if (flags != base_flags)
+		pci_acpi_osc_support(device->handle, flags);
+
       end:
 	if (result) {
 		if (!list_empty(&root->node))
@@ -376,15 +396,9 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type)
 
 static int __init acpi_pci_root_init(void)
 {
-
 	if (acpi_pci_disabled)
 		return 0;
 
-	/* DEBUG:
-	   acpi_dbg_layer = ACPI_PCI_COMPONENT;
-	   acpi_dbg_level = 0xFFFFFFFF;
-	 */
-
 	if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0)
 		return -ENODEV;