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[S390] cio: allow offline processing for disconnected devices

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When disconnected ccw devices are removed, the device has to be set
offline, otherwise there will be side effects including a reference
count imbalance. This patch modifies ccw_device_offline to work for
devices in disconnecte/not operational state. ccw_device_offline is
called by cio for devices which are online during device removal.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter 2008-09-09 12:38:59 +02:00 committed by Martin Schwidefsky
parent c91ebe4961
commit b301ea8c81
1 changed files with 7 additions and 0 deletions
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7
drivers/s390/cio/device_fsm.c
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@ -658,6 +658,13 @@ ccw_device_offline(struct ccw_device *cdev)
{ {
struct subchannel *sch; struct subchannel *sch;
/* Allow ccw_device_offline while disconnected. */
if (cdev->private->state == DEV_STATE_DISCONNECTED ||
cdev->private->state == DEV_STATE_NOT_OPER) {
cdev->private->flags.donotify = 0;
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
return 0;
}
if (ccw_device_is_orphan(cdev)) { if (ccw_device_is_orphan(cdev)) {
ccw_device_done(cdev, DEV_STATE_OFFLINE); ccw_device_done(cdev, DEV_STATE_OFFLINE);
return 0; return 0;