1 From: Gerald Schaefer <geraldsc@de.ibm.com>
2 Subject: cio: ccw devices are not removed when last path is varied offline
3 References: bnc#518291,LTC#54951
5 Symptom: When the last CHPID to an offline CCW device is varied offline,
6 that device remains registered even though it is no longer
8 Problem: The vary command triggers an internal path verification event
9 which is not handled for devices in the offline state.
10 Solution: Install a handler for the path verification event in offline state
11 which will remove the device if it is no longer accessible.
13 Acked-by: John Jolly <jjolly@suse.de>
15 drivers/s390/cio/device_fsm.c | 13 ++++++++++++-
16 1 file changed, 12 insertions(+), 1 deletion(-)
18 Index: linux-sles11/drivers/s390/cio/device_fsm.c
19 ===================================================================
20 --- linux-sles11.orig/drivers/s390/cio/device_fsm.c
21 +++ linux-sles11/drivers/s390/cio/device_fsm.c
22 @@ -739,6 +739,17 @@ static void ccw_device_generic_notoper(s
26 + * Handle path verification event in offline state.
28 +static void ccw_device_offline_verify(struct ccw_device *cdev,
29 + enum dev_event dev_event)
31 + struct subchannel *sch = to_subchannel(cdev->dev.parent);
33 + css_schedule_eval(sch->schid);
37 * Handle path verification event.
40 @@ -1155,7 +1166,7 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES]
41 [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
42 [DEV_EVENT_INTERRUPT] = ccw_device_offline_irq,
43 [DEV_EVENT_TIMEOUT] = ccw_device_nop,
44 - [DEV_EVENT_VERIFY] = ccw_device_nop,
45 + [DEV_EVENT_VERIFY] = ccw_device_offline_verify,
47 [DEV_STATE_VERIFY] = {
48 [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,