From 4c797ebc31e1ac6ebe13807c293f4e0c747953e1 Mon Sep 17 00:00:00 2001
From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Sat, 31 Jul 2010 20:04:24 +0400
Subject: [PATCH] kvm, pci: Return "no device" by default

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---
 include/kvm/pci.h | 2 ++
 pci.c             | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/include/kvm/pci.h b/include/kvm/pci.h
index 34d408e..e9e6859 100644
--- a/include/kvm/pci.h
+++ b/include/kvm/pci.h
@@ -9,6 +9,8 @@
 #define PCI_CONFIG_ADDRESS	0xcf8
 #define PCI_CONFIG_DATA		0xcfc
 
+#define PCI_NO_DEVICE		0xffffffff
+
 struct pci_config_address {
 	unsigned		zeros		: 2;		/* 1  .. 0  */
 	unsigned		register_number	: 6;		/* 7  .. 2  */
diff --git a/pci.c b/pci.c
index cbcf864..57d3452 100644
--- a/pci.c
+++ b/pci.c
@@ -36,6 +36,10 @@ static bool pci_config_data_out(struct kvm *self, uint16_t port, void *data, int
 
 static bool pci_config_data_in(struct kvm *self, uint16_t port, void *data, int size, uint32_t count)
 {
+	uint32_t *value = data;
+
+	*value = PCI_NO_DEVICE;
+
 	return true;
 }