crypto: drbg - Use Kconfig to ensure at least one RNG option is set

This patch removes the build-time test that ensures at least one RNG
is set.  Instead we will simply not build drbg if no options are set
through Kconfig.

This also fixes a typo in the name of the Kconfig option CRYTPO_DRBG
(should be CRYPTO_DRBG).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 0 insertions, 6 deletions

diff --git a/crypto/drbg.c b/crypto/drbg.c
index d6621a6181d7..acc752373791 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -99,12 +99,6 @@
 
 #include <crypto/drbg.h>
 
-#if !defined(CONFIG_CRYPTO_DRBG_HASH) && \
-        !defined(CONFIG_CRYPTO_DRBG_HMAC) && \
-        !defined(CONFIG_CRYPTO_DRBG_CTR)
-#warning "The DRBG code is useless without compiling at least one DRBG type"
-#endif
-
 /***************************************************************
  * Backend cipher definitions available to DRBG
  ***************************************************************/