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NAND: env: remember the flags used in the previous environment 

Previously, uninitialized stack space was being referenced.

Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Scott Wood 2011-02-08 15:25:02 -06:00
parent 8d4addc3c3
commit eef1d7199d
1 changed files with 5 additions and 1 deletions
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6
common/env_nand.c
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@ -181,7 +181,10 @@ int writeenv(size_t offset, u_char *buf)
return 0;
}
#ifdef CONFIG_ENV_OFFSET_REDUND
static unsigned char env_flags;
int saveenv(void)
{
env_t env_new;
@ -205,7 +208,7 @@ int saveenv(void)
return 1;
}
env_new.crc = crc32(0, env_new.data, ENV_SIZE);
++env_new.flags; /* increase the serial */
env_new.flags = ++env_flags; /* increase the serial */
if(gd->env_valid == 1) {
puts("Erasing redundant NAND...\n");
@ -399,6 +402,7 @@ void env_relocate_spec(void)
else
ep = tmp_env2;
env_flags = ep->flags;
env_import((char *)ep, 0);
free(tmp_env1);