diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index 8584e9382c2cd634aaa138eb56bf98cf29497ed8..8646914964e7fa16be01f50db5c508af73ae9b10 100644
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -960,13 +960,21 @@ e1000_free_desc_rings(struct e1000_adapter *adapter)
 		}
 	}
 
-	if(txdr->desc)
+	if(txdr->desc) {
 		pci_free_consistent(pdev, txdr->size, txdr->desc, txdr->dma);
-	if(rxdr->desc)
+		txdr->desc = NULL;
+	}
+	if(rxdr->desc) {
 		pci_free_consistent(pdev, rxdr->size, rxdr->desc, rxdr->dma);
+		rxdr->desc = NULL;
+	}
 
 	kfree(txdr->buffer_info);
+	txdr->buffer_info = NULL;
+
 	kfree(rxdr->buffer_info);
+	rxdr->buffer_info = NULL;
+
 	return;
 }