[PATCH] i386/x86-64: Return defined error value for bad PCI config space accesses
Mostly to get better handling when a extended config space
access has to fallback to Type1.
Cc: gregkh@suse.de
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/pci/mmconfig.c b/arch/i386/pci/mmconfig.c
index 2002c74..f77d7f8 100644
--- a/arch/i386/pci/mmconfig.c
+++ b/arch/i386/pci/mmconfig.c
@@ -80,8 +80,10 @@
unsigned long flags;
u32 base;
- if (!value || (bus > 255) || (devfn > 255) || (reg > 4095))
+ if (!value || (bus > 255) || (devfn > 255) || (reg > 4095)) {
+ *value = -1;
return -EINVAL;
+ }
base = get_base_addr(seg, bus, devfn);
if (!base)