KEYS: asymmetric: Add missing dependency on CRYPTO_SIG

Make ASYMMETRIC_PUBLIC_KEY_SUBTYPE select CRYPTO_SIG to avoid build
errors like the following, which were possible with
CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y && CONFIG_CRYPTO_SIG=n:

    ld: vmlinux.o: in function `public_key_verify_signature':
    (.text+0x306280): undefined reference to `crypto_alloc_sig'
    ld: (.text+0x306300): undefined reference to `crypto_sig_set_pubkey'
    ld: (.text+0x306324): undefined reference to `crypto_sig_verify'
    ld: (.text+0x30636c): undefined reference to `crypto_sig_set_privkey'

Fixes: 63ba4d67594a ("KEYS: asymmetric: Use new crypto interface without scatterlists")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

diff --git a/crypto/asymmetric_keys/Kconfig b/crypto/asymmetric_keys/Kconfig
index 59ec726b7c770e1064b5e5cd4e58b79880d21cfe..3f089abd6fc9f5086124405d31779205728c1db2 100644 (file)
--- a/crypto/asymmetric_keys/Kconfig
+++ b/crypto/asymmetric_keys/Kconfig
@@ -15,6 +15,7 @@ config ASYMMETRIC_PUBLIC_KEY_SUBTYPE
        select MPILIB
        select CRYPTO_HASH_INFO
        select CRYPTO_AKCIPHER
+       select CRYPTO_SIG
        select CRYPTO_HASH
        help
          This option provides support for asymmetric public key type handling.