From ad725fa7d9ad6dfa1167885394b5c6463820207f Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@ipxe.org>
Date: Wed, 22 Mar 2017 15:28:58 +0200
Subject: [PATCH] [tlan] Guard against failure to identify chip

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 src/drivers/net/tlan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/drivers/net/tlan.c b/src/drivers/net/tlan.c
index 7742f6d8..0e85b35b 100644
--- a/src/drivers/net/tlan.c
+++ b/src/drivers/net/tlan.c
@@ -808,6 +808,8 @@ static int tlan_probe ( struct nic *nic, struct pci_device *pci ) {
 		}
 		i++;
 	}
+	if (chip_idx == -1)
+		return 0;
 
 	priv->vendor_id = pci->vendor;
 	priv->dev_id = pci->device;