[PATCH 1/3] crypto: add enum

[Sam Ravnborg]

On Tue, Jan 05, 2016 at 09:11:01AM +0100, Marc Kleine-Budde wrote:
> From: Sascha Hauer <s.hauer at pengutronix.de>
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> Signed-off-by: Marc Kleine-Budde <mkl at pengutronix.de>

The subject and the patch description could use some
more love and care.


> diff --git a/crypto/digest.c b/crypto/digest.c
> index a90e4ff79f89..46600f246ece 100644
> --- a/crypto/digest.c
> +++ b/crypto/digest.c
> @@ -116,7 +116,27 @@ static struct digest_algo *digest_algo_get_by_name(const char *name)
>  	list_for_each_entry(tmp, &digests, list) {
>  		if (strcmp(tmp->base.name, name) != 0)
>  			continue;
> -		
> +
> +		if (tmp->base.priority <= priority)
> +			continue;
> +
> +		d = tmp;
> +		priority = tmp->base.priority;
> +	}
> +
> +	return d;
> +}
> +
> +static struct digest_algo *digest_algo_get_by_algo(enum hash_algo algo)
> +{
> +	struct digest_algo *d = NULL;
> +	struct digest_algo *tmp;
> +	int priority = -1;
> +
> +	list_for_each_entry(tmp, &digests, list) {
> +		if (tmp->base.algo != algo)
> +			continue;
> +
>  		if (tmp->base.priority <= priority)
>  			continue;
>  
> @@ -160,6 +180,27 @@ struct digest *digest_alloc(const char *name)
>  }
>  EXPORT_SYMBOL_GPL(digest_alloc);
>  
> +struct digest *digest_alloc_by_algo(enum hash_algo hash_algo)
> +{
> +	struct digest *d;
> +	struct digest_algo *algo;
> +
> +	algo = digest_algo_get_by_algo(hash_algo);
> +	if (!algo)
> +		return NULL;
> +
> +	d = xzalloc(sizeof(*d));
> +	d->algo = algo;
> +	d->ctx = xzalloc(algo->ctx_length);

Neither allocations are checked for failure.

	Sam