From d389fec6a2aec1ea7d47833f36a0413a619c8c12 Mon Sep 17 00:00:00 2001
From: Taku Izumi <izumi.taku@jp.fujitsu.com>
Date: Fri, 17 Oct 2008 13:52:51 +0900
Subject: ACPI/PCI: Set support bit for MSI in support field of _OSC

Currently linux doesn't have any code to set the "MSI supported" bit in
Support Fireld of _OSC. This patch adds the code for that.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
---
 drivers/pci/msi.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'drivers/pci/msi.c')

diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index d2812013fd2..74801f7df9c 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -759,3 +759,24 @@ void pci_msi_init_pci_dev(struct pci_dev *dev)
 {
 	INIT_LIST_HEAD(&dev->msi_list);
 }
+
+#ifdef CONFIG_ACPI
+#include <linux/acpi.h>
+#include <linux/pci-acpi.h>
+static void __devinit msi_acpi_init(void)
+{
+	if (acpi_pci_disabled)
+		return;
+	pci_osc_support_set(OSC_MSI_SUPPORT);
+	pcie_osc_support_set(OSC_MSI_SUPPORT);
+}
+#else
+static inline void msi_acpi_init(void) { }
+#endif /* CONFIG_ACPI */
+
+void __devinit msi_init(void)
+{
+	if (!pci_msi_enable)
+		return;
+	msi_acpi_init();
+}
-- 
cgit v1.2.3