tree 0a40c6dd2bf48ad3dc60ed04e5e45061a2313c2a
parent daa70fa960fb5625d762988cca7e4733573d90a3
author Christian Borntraeger <borntraeger@de.ibm.com> 1245141035 +0200
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1245141074 +0200

[S390] pm: vmwatchdog power management callbacks.

This patch implements suspend/hibernation for the vmwatchdog driver. The
pm_notifier_callchain is used to get control on PM events. Since watchdog
operation and suspend cannot work together in a reliable fashion, the open
flag is also used to prevent suspend and open from happening at the same
time.
The watchdog can also be active with no open file descriptor. This patch
adds another flag which is only changed in vmwdt_keep_alive and
vmwdt_disable.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>