From db1c50c090bad72eb5c28b1867b7564708ba7f3c Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 30 Mar 2015 14:55:47 +0200
Subject: [PATCH] polarssl: fix return code of entropy function

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
---
 ustream-polarssl.c | 4 +++-
 ustream-polarssl.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/ustream-polarssl.c b/ustream-polarssl.c
index e5c8455..cbf24cb 100644
--- a/ustream-polarssl.c
+++ b/ustream-polarssl.c
@@ -79,7 +79,9 @@ static bool urandom_init(void)
 
 static int _urandom(void *ctx, unsigned char *out, size_t len)
 {
-	read(urandom_fd, out, len);
+	if (read(urandom_fd, out, len) < 0)
+		return POLARSSL_ERR_ENTROPY_SOURCE_FAILED;
+
 	return 0;
 }
 
diff --git a/ustream-polarssl.h b/ustream-polarssl.h
index dfc287d..3265472 100644
--- a/ustream-polarssl.h
+++ b/ustream-polarssl.h
@@ -26,6 +26,7 @@
 #include <polarssl/rsa.h>
 #include <polarssl/error.h>
 #include <polarssl/version.h>
+#include <polarssl/entropy.h>
 
 #if POLARSSL_VERSION_MAJOR > 1 || POLARSSL_VERSION_MINOR >= 3
 #define USE_VERSION_1_3
-- 
2.11.0