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| author | Andi Kleen <ak@suse.de> | 2006-04-07 19:49:36 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-09 11:53:51 -0700 |
| commit | ec0f08eeea6ac1d8c925f47e3677e4c985fd8f63 (patch) | |
| tree | 053ede4e6c6648dc8d927a2ad17ef5e03069b3a2 /arch/i386 | |
| parent | fa47dd0ba303599f8adf8d8336ed2fb74efc47c5 (diff) | |
| download | linux-ec0f08eeea6ac1d8c925f47e3677e4c985fd8f63.tar.gz linux-ec0f08eeea6ac1d8c925f47e3677e4c985fd8f63.tar.bz2 linux-ec0f08eeea6ac1d8c925f47e3677e4c985fd8f63.zip | |
[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')
| -rw-r--r-- | arch/i386/pci/direct.c | 5 |
1 files changed, 5 insertions, 0 deletions
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 <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)) |