From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Tue, 19 Feb 2008 14:29:26 +0000 (+0100)
Subject: [S390] Make sure enabled wait psw is loaded in default_idle.
X-Git-Tag: v2.6.25-rc3~121^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11ab244c9faead91683a12e4cb10d26b279bb4aa;p=pandora-kernel.git

[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>
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