Imported linux-2.6.27.39 suse/xen patches.

[ipfire-2.x.git] / src / patches / suse-2.6.27.39 / patches.xen / xen3-acpi-pci-pci-msi-_osc-support-capabilities-called-when-root-bridge-added.patch

From 07ae95f988a34465bdcb384bfa73c03424fe2312 Mon Sep 17 00:00:00 2001
From: Andrew Patterson <andrew.patterson@hp.com>
Date: Mon, 10 Nov 2008 15:31:05 -0700
Subject: ACPI/PCI: PCI MSI _OSC support capabilities called when root bridge added
Patch-mainline: 2.6.29
References: bnc#438941

The _OSC capability OSC_MSI_SUPPORT is set when the root bridge is added
with pci_acpi_osc_support(), so we no longer need to do it in the PCI
MSI driver.  Also adds the function pci_msi_enabled, which returns true
if pci=nomsi is not on the kernel command-line.

Signed-off-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Automatically created from "patches.drivers/acpi-pci-pci-msi-_osc-support-capabilities-called-when-root-bridge-added.patch" by xen-port-patches.py

--- sle11-2009-04-20.orig/drivers/pci/msi-xen.c	2009-04-24 13:36:45.000000000 +0200
+++ sle11-2009-04-20/drivers/pci/msi-xen.c	2009-01-09 11:10:27.000000000 +0100
@@ -804,6 +804,17 @@ void pci_no_msi(void)
 	pci_msi_enable = 0;
 }
 
+/**
+ * pci_msi_enabled - is MSI enabled?
+ *
+ * Returns true if MSI has not been disabled by the command-line option
+ * pci=nomsi.
+ **/
+int pci_msi_enabled(void)
+{
+	return pci_msi_enable;
+}
+
 void pci_msi_init_pci_dev(struct pci_dev *dev)
 {
 #ifndef CONFIG_XEN