tree 8d9f169271c95dc0d8460905d2ff3e153c981cac
parent f58fe336009f451748c1c337f35130a320ef923d
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1442242883 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1444825943 +0200

s390/zcrypt: introduce state machine for the AP bus

Replace the two fields 'unregistered' and 'reset' with a device
state with 5 possible values. Introduce two events for the AP devices,
device poll and device timeout. With the state machine it is easier
to deal with device initialization and suspend/resume. Device polling
is simpler as well, the arkane 'flags' passing is gone.

Reviewd-by: Ingo Tuchscherer <ingo.tuchscherer@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>