diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 3881918f5382c4e1305e4c5127bfbb2180bb85cd..cea37e0837ff64d3ed4ae16ccc78f85557be9700 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -1722,6 +1722,15 @@ static int __devinit igb_probe(struct pci_dev *pdev,
 	u16 eeprom_apme_mask = IGB_EEPROM_APME;
 	u32 part_num;
 
+	/* Catch broken hardware that put the wrong VF device ID in
+	 * the PCIe SR-IOV capability.
+	 */
+	if (pdev->is_virtfn) {
+		WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
+		     pci_name(pdev), pdev->vendor, pdev->device);
+		return -EINVAL;
+	}
+
 	err = pci_enable_device_mem(pdev);
 	if (err)
 		return err;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 7b5d9764f317c3c776712009dde301c27d9c3b99..74d9b6df3029f3c67e9e85ff5a95a14c5ef6ff0b 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6492,6 +6492,15 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
 #endif
 	u32 part_num, eec;
 
+	/* Catch broken hardware that put the wrong VF device ID in
+	 * the PCIe SR-IOV capability.
+	 */
+	if (pdev->is_virtfn) {
+		WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n",
+		     pci_name(pdev), pdev->vendor, pdev->device);
+		return -EINVAL;
+	}
+
 	err = pci_enable_device_mem(pdev);
 	if (err)
 		return err;