[PATCH v2 2/2] crypto: jitterentropy - always select CRYPTO_RNG

From: Arnd Bergmann
Date: Tue Jan 26 2016 - 08:48:03 EST

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@xxxxxxxx>
crypto/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index 3be07ad1d80d..88248821af82 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1595,6 +1595,7 @@ endif # if CRYPTO_DRBG_MENU

tristate "Jitterentropy Non-Deterministic Random Number Generator"
+ select CRYPTO_RNG
The Jitterentropy RNG is a noise that is intended
to provide seed to another RNG. The RNG does not