From 4235d834cfd090c7d33352adda8762679a132347 Mon Sep 17 00:00:00 2001
From: Thanos Makatos <thanos.makatos@nutanix.com>
Date: Wed, 25 Nov 2020 08:19:30 -0500
Subject: add assert

Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>
---
 lib/dma.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/dma.c b/lib/dma.c
index af5c624..96b12c5 100644
--- a/lib/dma.c
+++ b/lib/dma.c
@@ -212,6 +212,8 @@ dma_controller_add_region(dma_controller_t *dma,
     dma_memory_region_t *region;
     int page_size;
 
+    assert(dma != NULL);
+
     if (fd == -1) {
         errno = EINVAL;
         return -1;
-- 
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