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crypto: jitterentropy - always select CRYPTO_RNG

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When building the jitterentropy driver by itself, we get a link error
when CRYPTO_RNG is not enabled as well:

crypto/built-in.o: In function `jent_mod_init':
jitterentropy-kcapi.c:(.init.text+0x98): undefined reference to `crypto_register_rng'
crypto/built-in.o: In function `jent_mod_exit':
jitterentropy-kcapi.c:(.exit.text+0x60): undefined reference to `crypto_unregister_rng'

This adds a 'select CRYPTO_RNG' to CRYPTO_JITTERENTROPY to ensure the API
is always there when it's used, not just when DRBG is also enabled.
CRYPTO_DRBG would set it implicitly through CRYPTO_JITTERENTROPY now,
but this leaves it in place to make it explicit what the driver does.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Arnd Bergmann 2016-01-26 14:47:10 +01:00 committed by Herbert Xu
parent bfb2892018
commit 2f313e0290
1 changed files with 1 additions and 0 deletions
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crypto/Kconfig
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@ -1574,6 +1574,7 @@ endif # if CRYPTO_DRBG_MENU
config CRYPTO_JITTERENTROPY
tristate "Jitterentropy Non-Deterministic Random Number Generator"
select CRYPTO_RNG
help
The Jitterentropy RNG is a noise that is intended
to provide seed to another RNG. The RNG does not