1 files changed, 3 insertions, 1 deletions

diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c
index 4457cf3eb401..0659ced01185 100644
--- a/arch/i386/pci/direct.c
+++ b/arch/i386/pci/direct.c
@@ -19,8 +19,10 @@ int pci_conf1_read(unsigned int seg, unsigned int bus,
 {
         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);