From 7bcf295e8db48474f2ad4e37c7cccc3550fc2904 Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <andrew.smirnov@gmail.com>
Date: Mon, 15 Oct 2018 10:00:19 -0700
Subject: dummy_malloc: Check if sbrk() fails

Add code to check if sbrk() fails as well as setting appropriate
'errno' for users that may rely on it for error reporting.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 common/dummy_malloc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/dummy_malloc.c b/common/dummy_malloc.c
index ab67120180..0120d9be2e 100644
--- a/common/dummy_malloc.c
+++ b/common/dummy_malloc.c
@@ -32,6 +32,11 @@ void *memalign(size_t alignment, size_t bytes)
 {
 	void *mem = sbrk(bytes + alignment);
 
+	if (!mem) {
+		errno = ENOMEM;
+		return NULL;
+	}
+
 	return PTR_ALIGN(mem, alignment);
 }
 
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