[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/direct.c b/arch/i386/pci/direct.c
index 4457cf3..0659ced 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -19,8 +19,10 @@
{
unsigned long flags;
- if (!value || (bus > 255) || (devfn > 255) || (reg > 255))
+ if (!value || (bus > 255) || (devfn > 255) || (reg > 255)) {
+ *value = -1;
return -EINVAL;
+ }
spin_lock_irqsave(&pci_config_lock, flags);