crypto: public_key: select CRYPTO_AKCIPHER

In some rare randconfig builds, we can end up with
ASYMMETRIC_PUBLIC_KEY_SUBTYPE enabled but CRYPTO_AKCIPHER disabled,
which fails to link because of the reference to crypto_alloc_akcipher:

crypto/built-in.o: In function `public_key_verify_signature':
:(.text+0x110e4): undefined reference to `crypto_alloc_akcipher'

This adds a Kconfig 'select' statement to ensure the dependency
is always there.

Cc: <stable@vger.kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
index 91a7e047a765ebfe24e969e15f3e85114dd7445b..477cbf39e0fbc699a028075ccf13f7a45d3d8155 100644 (file)
--- a/crypto/asymmetric_keys/Kconfig
+++ b/crypto/asymmetric_keys/Kconfig
@@ -13,6 +13,7 @@ config ASYMMETRIC_PUBLIC_KEY_SUBTYPE
        tristate "Asymmetric public-key crypto algorithm subtype"
        select MPILIB
        select CRYPTO_HASH_INFO
+       select CRYPTO_AKCIPHER
        help
          This option provides support for asymmetric public key type handling.
          If signature generation and/or verification are to be used,