From e15670a191dba156225af20e5dc1e44980469a5f Mon Sep 17 00:00:00 2001
From: Xiang Xiao <xiaoxiang@xiaomi.com>
Date: Sat, 26 Jan 2019 07:07:42 -0600
Subject: [PATCH] mm/mm_heap/mm_sbrk.c: Fix backward conditional test.  Should
 call mm_initialize() when brkaddr equal zero

---
 mm/mm_heap/mm_sbrk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/mm_heap/mm_sbrk.c b/mm/mm_heap/mm_sbrk.c
index a909d082c26..570021c07d6 100644
--- a/mm/mm_heap/mm_sbrk.c
+++ b/mm/mm_heap/mm_sbrk.c
@@ -141,7 +141,7 @@ FAR void *mm_sbrk(FAR struct mm_heap_s *heap, intptr_t incr,
        */
 
       bytesize = pgincr << MM_PGSHIFT;
-      if (brkaddr != 0)
+      if (brkaddr == 0)
         {
           /* No... then initialize it now */