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env_nand.c: print error message and fail gracefully

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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>
This commit is contained in:
Wolfgang Denk 2010-01-16 21:50:26 -07:00 committed by Scott Wood
parent 674ef7bd02
commit 15b86c3d6c
1 changed files with 7 additions and 0 deletions
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7
common/env_nand.c
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@ -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))