From 2b93e682f2b6a0ae679ada825dd936aba2f06ac8 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <ben@decadent.org.uk>
Date: Wed, 24 Mar 2010 03:36:31 +0000
Subject: [PATCH] --- yaml --- r: 196555 b: refs/heads/master c:
 6fd024893911dcb51b4a0aa71971db5ba38f7071 h: refs/heads/master i:   196553:
 9ff04061f8542446f764097b149b3465868b084a   196551:
 b4dfd0e10375a00e672a3e98051934f97c524f2b v: v3

---
 [refs]                             |  2 +-
 trunk/drivers/char/agp/amd64-agp.c | 27 +++++++++++++++------------
 2 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/[refs] b/[refs]
index 39f5731db1da..30c9c6dba52e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d831692a1a8e9ceaaa9bb16bb3fc503b7e372558
+refs/heads/master: 6fd024893911dcb51b4a0aa71971db5ba38f7071
diff --git a/trunk/drivers/char/agp/amd64-agp.c b/trunk/drivers/char/agp/amd64-agp.c
index 73703b115cd2..67ea3a60de74 100644
--- a/trunk/drivers/char/agp/amd64-agp.c
+++ b/trunk/drivers/char/agp/amd64-agp.c
@@ -500,6 +500,10 @@ static int __devinit agp_amd64_probe(struct pci_dev *pdev,
 	u8 cap_ptr;
 	int err;
 
+	/* The Highlander principle */
+	if (agp_bridges_found)
+		return -ENODEV;
+
 	cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
 	if (!cap_ptr)
 		return -ENODEV;
@@ -563,6 +567,8 @@ static void __devexit agp_amd64_remove(struct pci_dev *pdev)
 			   amd64_aperture_sizes[bridge->aperture_size_idx].size);
 	agp_remove_bridge(bridge);
 	agp_put_bridge(bridge);
+
+	agp_bridges_found--;
 }
 
 #ifdef CONFIG_PM
@@ -710,6 +716,11 @@ static struct pci_device_id agp_amd64_pci_table[] = {
 
 MODULE_DEVICE_TABLE(pci, agp_amd64_pci_table);
 
+static DEFINE_PCI_DEVICE_TABLE(agp_amd64_pci_promisc_table) = {
+	{ PCI_DEVICE_CLASS(0, 0) },
+	{ }
+};
+
 static struct pci_driver agp_amd64_pci_driver = {
 	.name		= "agpgart-amd64",
 	.id_table	= agp_amd64_pci_table,
@@ -735,7 +746,6 @@ int __init agp_amd64_init(void)
 		return err;
 
 	if (agp_bridges_found == 0) {
-		struct pci_dev *dev;
 		if (!agp_try_unsupported && !agp_try_unsupported_boot) {
 			printk(KERN_INFO PFX "No supported AGP bridge found.\n");
 #ifdef MODULE
@@ -751,17 +761,10 @@ int __init agp_amd64_init(void)
 			return -ENODEV;
 
 		/* Look for any AGP bridge */
-		dev = NULL;
-		err = -ENODEV;
-		for_each_pci_dev(dev) {
-			if (!pci_find_capability(dev, PCI_CAP_ID_AGP))
-				continue;
-			/* Only one bridge supported right now */
-			if (agp_amd64_probe(dev, NULL) == 0) {
-				err = 0;
-				break;
-			}
-		}
+		agp_amd64_pci_driver.id_table = agp_amd64_pci_promisc_table;
+		err = driver_attach(&agp_amd64_pci_driver.driver);
+		if (err == 0 && agp_bridges_found == 0)
+			err = -ENODEV;
 	}
 	return err;
 }