s390: use correct input data address for setup_randomness
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Sun, 5 Feb 2017 22:03:18 +0000 (23:03 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 8 Feb 2017 13:13:23 +0000 (14:13 +0100)
commit4920e3cf77347d7d7373552d4839e8d832321313
treeef75f8433fbc6f0f39112ac43e20af9ec21ba7c1
parentf694bb3a36a8113addd31817e4b5aca42326353d
s390: use correct input data address for setup_randomness

The current implementation of setup_randomness uses the stack address
and therefore the pointer to the SYSIB 3.2.2 block as input data
address. Furthermore the length of the input data is the number of
virtual-machine description blocks which is typically one.

This means that typically a single zero byte is fed to
add_device_randomness.

Fix both of these and use the address of the first virtual machine
description block as input data address and also use the correct
length.

Fixes: bcfcbb6bae64 ("s390: add system information as device randomness")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/setup.c