diff options
author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2007-10-12 10:11:26 -0400 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-10-12 10:13:02 -0400 |
commit | 3f4cf6e72f9f6a0b046b32881acc4f829f3aaa46 (patch) | |
tree | 84302932647aed49fa65b506fd0f5652af276915 /drivers/s390/cio/device.h | |
parent | 3952c8d43aa23862181ad23ecdf72895b4be3143 (diff) |
[S390] cio: Avoid machine check vs. not operational races.
There was the possibilty that an action like ccw_device_set_offline()
triggered by a device gone machine check might trigger a not oper
event. Unfortunately, this could lead to the situation that we tried
to unregister a subchannel twice: Once from the slow path evaluation,
and once via the not oper event.
Fix this by always using the same mechanism (css_schedule_eval()) for
triggering the unregister. This makes sure that unregistration will
only be done once. As an added bonus, it also simplyfies the code.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/device.h')
-rw-r--r-- | drivers/s390/cio/device.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index b66338b76579..0d4089600439 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h | |||
@@ -80,7 +80,6 @@ void io_subchannel_recog_done(struct ccw_device *cdev); | |||
80 | int ccw_device_cancel_halt_clear(struct ccw_device *); | 80 | int ccw_device_cancel_halt_clear(struct ccw_device *); |
81 | 81 | ||
82 | void ccw_device_do_unreg_rereg(struct work_struct *); | 82 | void ccw_device_do_unreg_rereg(struct work_struct *); |
83 | void ccw_device_call_sch_unregister(struct work_struct *); | ||
84 | void ccw_device_move_to_orphanage(struct work_struct *); | 83 | void ccw_device_move_to_orphanage(struct work_struct *); |
85 | int ccw_device_is_orphan(struct ccw_device *); | 84 | int ccw_device_is_orphan(struct ccw_device *); |
86 | 85 | ||