From ec0f08eeea6ac1d8c925f47e3677e4c985fd8f63 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 7 Apr 2006 19:49:36 +0200 Subject: [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 Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/i386/pci/direct.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c index 99012b93bd12..4457cf3eb401 100644 --- a/arch/i386/pci/direct.c +++ b/arch/i386/pci/direct.c @@ -4,6 +4,7 @@ #include #include +#include #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)) -- cgit v1.2.3