tree 73f5498f5de7a81e1337aa1349f2d5db8a115376
parent 057c5cb35ece6ae3a4c2cb849f3948c5ad6add32
author Heiko Carstens <heiko.carstens@de.ibm.com> 1203431366 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1203431373 +0100

[S390] Make sure enabled wait psw is loaded in default_idle.

If both NO_IDLE_HZ and VIRT_TIMER are disabled default_idle won't load
an enabled wait psw and busy loop instead. This is because the
idle_chain is empty and the return value of atomic_notifier_call_chain
will be NOTIFY_DONE, which causes default_idle to return instead of
loading an enabled wait psw.
Fix this by calling __atomic_notifier_call_chain instead and add proper
return value handling.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>