[S390] ccw_device_notify: improve return codes
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Fri, 26 Feb 2010 21:37:28 +0000 (22:37 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Fri, 26 Feb 2010 21:37:29 +0000 (22:37 +0100)
commit76e6fb4b86446e4605379b99ad3dd3f96bb1696f
tree0d123c6e1091d28ec87d98e76e037cfe8919942f
parentb4c707214c987da021d4d5c4ed54612cf73d80d6
[S390] ccw_device_notify: improve return codes

Callers of ccw_device_notify could not distinguish between a driver
who has no notifier registered and a driver who doesn't want to keep
a device after a certain event. Change this by adding proper return
codes.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/cio/device.c
drivers/s390/cio/device.h
drivers/s390/cio/device_fsm.c