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authorAndi Kleen <ak@suse.de>2006-04-07 19:49:36 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-09 11:53:51 -0700
commitec0f08eeea6ac1d8c925f47e3677e4c985fd8f63 (patch)
tree053ede4e6c6648dc8d927a2ad17ef5e03069b3a2 /arch/i386/pci/direct.c
parentfa47dd0ba303599f8adf8d8336ed2fb74efc47c5 (diff)
[PATCH] x86_64: Don't sanity check Type 1 PCI bus access on newer systems
Horus systems don't have anything on bus 0 which makes the Type 1 sanity checks fail. Use the DMI BIOS year to check for newer systems and always assume Type 1 works on them. I used 2001 as an pretty arbitary cutoff year. Cc: gregkh@suse.de Cc: Navin Boppuri <navin.boppuri@newisys.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/pci/direct.c')
-rw-r--r--arch/i386/pci/direct.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c
index 99012b93bd1..4457cf3eb40 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -4,6 +4,7 @@
#include <linux/pci.h>
#include <linux/init.h>
+#include <linux/dmi.h>
#include "pci.h"
/*
@@ -188,6 +189,10 @@ static int __init pci_sanity_check(struct pci_raw_ops *o)
if (pci_probe & PCI_NO_CHECKS)
return 1;
+ /* Assume Type 1 works for newer systems.
+ This handles machines that don't have anything on PCI Bus 0. */
+ if (dmi_get_year(DMI_BIOS_DATE) >= 2001)
+ return 1;
for (devfn = 0; devfn < 0x100; devfn++) {
if (o->read(0, 0, devfn, PCI_CLASS_DEVICE, 2, &x))