[S390] zcrypt: add support for large random numbers
This patch allows user space applications to access large amounts of
truly random data. The random data source is the build-in hardware
random number generator on the CEX2C cards.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 6b658d8..6d2f0c8 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -64,6 +64,7 @@
tristate "Support for PCI-attached cryptographic adapters"
depends on S390
select ZCRYPT_MONOLITHIC if ZCRYPT="y"
+ select HW_RANDOM
help
Select this option if you want to use a PCI-attached cryptographic
adapter like: