1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index 4c0336b31caf..775e933c2225 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -58,6 +58,9 @@ static int __init pci_stub_init(void)
                         subdevice = PCI_ANY_ID, class=0, class_mask=0;
                 int fields;
 
+                if (!strlen(id))
+                        continue;
+
                 fields = sscanf(id, "%x:%x:%x:%x:%x:%x",
                                 &vendor, &device, &subvendor, &subdevice,
                                 &class, &class_mask);