[U-Boot] [PATCH-V2 8/9] env_nand.c: print error message and fail gracefully

[John Rigby <jcrigby@gmail.com>]

From: Wolfgang Denk <wd@denx.de>

env_nand.c would crash silently if a malloc() for the environment
buffers failed; make it print an error message and fail gracefully,
i. e. use the default environment then.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: John Rigby <jcrigby@gmail.com>
---
 common/env_nand.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/common/env_nand.c b/common/env_nand.c
index ca631af..a15a950 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -298,6 +298,13 @@ void env_relocate_spec (void)
 	tmp_env1 = (env_t *) malloc(CONFIG_ENV_SIZE);
 	tmp_env2 = (env_t *) malloc(CONFIG_ENV_SIZE);
 
+	if ((tmp_env1 == NULL) || (tmp_env2 == NULL)) {
+		puts("Can't allocate buffers for environment\n");
+		free (tmp_env1);
+		free (tmp_env2);
+		return use_default();
+	}
+
 	if (readenv(CONFIG_ENV_OFFSET, (u_char *) tmp_env1))
 		puts("No Valid Environment Area Found\n");
 	if (readenv(CONFIG_ENV_OFFSET_REDUND, (u_char *) tmp_env2))
-- 
1.6.4.2.236.gf324c