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crypto: mxc-scc - fix unwinding in mxc_scc_crypto_register()

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There are two issues here:

1) We need to decrement "i" otherwise we unregister something that was
   not successfully registered.
2) The original code did not unregister the first element in the array
   where i is zero.

Fixes: d293b640eb ('crypto: mxc-scc - add basic driver for the MXC SCC')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dan Carpenter 2016-04-22 13:01:39 +03:00 committed by Herbert Xu
parent b908bd3d4c
commit 4c048af708
1 changed files with 2 additions and 2 deletions
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4
drivers/crypto/mxc-scc.c
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@ -616,7 +616,7 @@ static struct mxc_scc_crypto_tmpl *scc_crypto_algs[] = {
static int mxc_scc_crypto_register(struct mxc_scc *scc)
{
unsigned int i;
int i;
int err = 0;
for (i = 0; i < ARRAY_SIZE(scc_crypto_algs); i++) {
@ -629,7 +629,7 @@ static int mxc_scc_crypto_register(struct mxc_scc *scc)
return 0;
err_out:
for (; i > 0; i--)
while (--i >= 0)
crypto_unregister_alg(&scc_crypto_algs[i]->alg);
return err;