linux-kernel - [ 035/180] PNP: fix "work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB"

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Date:	Tue, 02 Oct 2012 00:52:32 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Willy Tarreau <w@....eu>, Jiri Slaby <jslaby@...e.cz>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: [ 035/180] PNP: fix "work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB"

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Willy Tarreau <w@....eu>

Initial stable commit : 2215d91091c465fd58da7814d1c10e09ac2d8307

This patch backported into 2.6.32.55 is enabled when CONFIG_AMD_NB is set,
but this config option does not exist in 2.6.32, it was called CONFIG_K8_NB,
so the fix was never applied. Some other changes were needed to make it work.
first, the correct include file name was asm/k8.h and not asm/amd_nb.h, and
second, amd_get_mmconfig_range() is needed and was merged by previous patch.

Thanks to Jiri Slabi who reported the issue and diagnosed all the dependencies.

Signed-off-by: Willy Tarreau <w@....eu>
Cc: Jiri Slaby <jslaby@...e.cz>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Jesse Barnes <jbarnes@...tuousgeek.org>
---
 arch/x86/pci/amd_bus.c |    1 +
 drivers/pnp/quirks.c   |    6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index cb34763..aae9931 100644
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -3,6 +3,7 @@
 #include <linux/topology.h>
 #include <linux/cpu.h>
 #include <asm/pci_x86.h>
+#include <asm/k8.h>
 
 #ifdef CONFIG_X86_64
 #include <asm/pci-direct.h>
diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c
index eb39d26..253996c 100644
--- a/drivers/pnp/quirks.c
+++ b/drivers/pnp/quirks.c
@@ -300,9 +300,9 @@ static void quirk_system_pci_resources(struct pnp_dev *dev)
 	}
 }
 
-#ifdef CONFIG_AMD_NB
+#ifdef CONFIG_K8_NB
 
-#include <asm/amd_nb.h>
+#include <asm/k8.h>
 
 static void quirk_amd_mmconfig_area(struct pnp_dev *dev)
 {
@@ -366,7 +366,7 @@ static struct pnp_fixup pnp_fixups[] = {
 	/* PnP resources that might overlap PCI BARs */
 	{"PNP0c01", quirk_system_pci_resources},
 	{"PNP0c02", quirk_system_pci_resources},
-#ifdef CONFIG_AMD_NB
+#ifdef CONFIG_K8_NB
 	{"PNP0c01", quirk_amd_mmconfig_area},
 #endif
 	{""}
-- 
1.7.2.1.45.g54fbc



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