crypto: api - add a helper to (un)register a array of templates

This patch add a helper to (un)register a array of templates. The
following patches will use this helper to simplify the code.

Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 27 insertions, 0 deletions

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 713baabeb643..4c9c86b55738 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -494,6 +494,24 @@ out:
 }
 EXPORT_SYMBOL_GPL(crypto_register_template);
 
+int crypto_register_templates(struct crypto_template *tmpls, int count)
+{
+	int i, err;
+
+	for (i = 0; i < count; i++) {
+		err = crypto_register_template(&tmpls[i]);
+		if (err)
+			goto out;
+	}
+	return 0;
+
+out:
+	for (--i; i >= 0; --i)
+		crypto_unregister_template(&tmpls[i]);
+	return err;
+}
+EXPORT_SYMBOL_GPL(crypto_register_templates);
+
 void crypto_unregister_template(struct crypto_template *tmpl)
 {
 	struct crypto_instance *inst;
@@ -523,6 +541,15 @@ void crypto_unregister_template(struct crypto_template *tmpl)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_template);
 
+void crypto_unregister_templates(struct crypto_template *tmpls, int count)
+{
+	int i;
+
+	for (i = count - 1; i >= 0; --i)
+		crypto_unregister_template(&tmpls[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_templates);
+
 static struct crypto_template *__crypto_lookup_template(const char *name)
 {
 	struct crypto_template *q, *tmpl = NULL;