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padata: Check for valid padata instance on start

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This patch introduces the PADATA_INVALID flag which is
checked on padata start. This will be used to mark a padata
instance as invalid, if the padata cpumask does not intersect
with the active cpumask. we change padata_start to return an
error if the PADATA_INVALID is set. Also we adapt the only
padata user, pcrypt to this change.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert
2010-07-07 15:30:10 +02:00
committed by Herbert Xu
parent 7e3de7b1be
commit 4c87917029
3 changed files with 32 additions and 8 deletions
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19
crypto/pcrypt.c
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@@ -385,6 +385,7 @@ static struct crypto_template pcrypt_tmpl = {
static int __init pcrypt_init(void)
{
int err = -ENOMEM;
encwq = create_workqueue("pencrypt");
if (!encwq)
goto err;
@@ -400,14 +401,22 @@ static int __init pcrypt_init(void)
pcrypt_dec_padata = padata_alloc(cpu_possible_mask, decwq);
if (!pcrypt_dec_padata)
goto err_free_padata;
goto err_free_enc_padata;
padata_start(pcrypt_enc_padata);
padata_start(pcrypt_dec_padata);
err = padata_start(pcrypt_enc_padata);
if (err)
goto err_free_dec_padata;
err = padata_start(pcrypt_dec_padata);
if (err)
goto err_free_dec_padata;
return crypto_register_template(&pcrypt_tmpl);
err_free_padata:
err_free_dec_padata:
padata_free(pcrypt_dec_padata);
err_free_enc_padata:
padata_free(pcrypt_enc_padata);
err_destroy_decwq:
@@ -417,7 +426,7 @@ err_destroy_encwq:
destroy_workqueue(encwq);
err:
return -ENOMEM;
return err;
}
static void __exit pcrypt_exit(void)