[S390] Support for s390 Pseudo Random Number Generator

Starting with the z9 the CPU Cryptographic Assist Facility comes with
an integrated Pseudo Random Number Generator. The generator creates
random numbers by an algorithm similar to the ANSI X9.17 standard.
The pseudo-random numbers can be accessed via a character device driver
node called /dev/prandom. Similar to /dev/urandom any amount of bytes
can be read from the device without blocking.

Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 879250d3d069..ff8c4beaace4 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -51,6 +51,8 @@ config CRYPTO_DEV_PADLOCK_SHA
           If unsure say M. The compiled module will be
           called padlock-sha.ko
 
+source "arch/s390/crypto/Kconfig"
+
 config CRYPTO_DEV_GEODE
         tristate "Support for the Geode LX AES engine"
         depends on CRYPTO && X86_32 && PCI