crypto: s390 - cleanup s390 Kconfig options

Cleanup the remaining s390 crypto options by mentioning the earliest machine
type that supports an accelerated algorithm.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index d459cc7..dc601ff 100644 (file)
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -91,6 +91,8 @@ config CRYPTO_SHA1_S390
          This is the s390 hardware accelerated implementation of the
          SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
 
+         It is available as of z990.
+
 config CRYPTO_SHA256_S390
        tristate "SHA256 digest algorithm"
        depends on S390
@@ -99,8 +101,7 @@ config CRYPTO_SHA256_S390
          This is the s390 hardware accelerated implementation of the
          SHA256 secure hash standard (DFIPS 180-2).
 
-         This version of SHA implements a 256 bit hash with 128 bits of
-         security against collision attacks.
+         It is available as of z9.
 
 config CRYPTO_SHA512_S390
        tristate "SHA384 and SHA512 digest algorithm"
@@ -110,10 +111,7 @@ config CRYPTO_SHA512_S390
          This is the s390 hardware accelerated implementation of the
          SHA512 secure hash standard.
 
-         This version of SHA implements a 512 bit hash with 256 bits of
-         security against collision attacks. The code also includes SHA-384,
-         a 384 bit hash with 192 bits of security against collision attacks.
-
+         It is available as of z10.
 
 config CRYPTO_DES_S390
        tristate "DES and Triple DES cipher algorithms"
@@ -148,8 +146,10 @@ config S390_PRNG
          Select this option if you want to use the s390 pseudo random number
          generator. The PRNG is part of the cryptographic processor functions
          and uses triple-DES to generate secure random numbers like the
-         ANSI X9.17 standard. The PRNG is usable via the char device
-         /dev/prandom.
+         ANSI X9.17 standard. User-space programs access the
+         pseudo-random-number device through the char device /dev/prandom.
+
+         It is available as of z9.
 
 config CRYPTO_GHASH_S390
        tristate "GHASH digest algorithm"