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[CRYPTO] api: fix crypto_alloc_base() return value

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This patch makes crypto_alloc_base() return proper return value.

- If kzalloc() failure happens within __crypto_alloc_tfm(),
  crypto_alloc_base() returns NULL. But crypto_alloc_base()
  is supposed to return error code as pointer. So this patch
  makes it return -ENOMEM in that case.

- crypto_alloc_base() is suppose to return -EINTR, if it is
  interrupted by signal. But it may not return -EINTR.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Akinobu Mita 2006-10-11 22:29:51 +10:00 committed by Herbert Xu
parent 53a5fbdc2d
commit 9765d262b8
1 changed files with 8 additions and 7 deletions
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15
crypto/api.c
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@ -331,7 +331,7 @@ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 flags)
tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, flags);
tfm = kzalloc(tfm_size, GFP_KERNEL);
if (tfm == NULL)
goto out;
goto out_err;
tfm->__crt_alg = alg;
@ -355,6 +355,7 @@ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 flags)
crypto_exit_ops(tfm);
out_free_tfm:
kfree(tfm);
out_err:
tfm = ERR_PTR(err);
out:
return tfm;
@ -414,14 +415,14 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
struct crypto_alg *alg;
alg = crypto_alg_mod_lookup(alg_name, type, mask);
err = PTR_ERR(alg);
tfm = ERR_PTR(err);
if (IS_ERR(alg))
if (IS_ERR(alg)) {
err = PTR_ERR(alg);
goto err;
}
tfm = __crypto_alloc_tfm(alg, 0);
if (!IS_ERR(tfm))
break;
return tfm;
crypto_mod_put(alg);
err = PTR_ERR(tfm);
@ -433,9 +434,9 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask)
err = -EINTR;
break;
}
};
}
return tfm;
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(crypto_alloc_base);