diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index f77b329..78734e2 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -1701,6 +1701,11 @@
 	if (error)
 		goto out_free_consistent;
 
+	if (!buffer->NumPhys) {
+		error = -ENODEV;
+		goto out_free_consistent;
+	}
+
 	/* save config data */
 	port_info->num_phys = buffer->NumPhys;
 	port_info->phy_info = kcalloc(port_info->num_phys,