diff options
Diffstat (limited to 'drivers/s390/cio/device.c')
| -rw-r--r-- | drivers/s390/cio/device.c | 23 |
1 files changed, 5 insertions, 18 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 6097763f1035..0dcfc0ee3d81 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1051,23 +1051,6 @@ static void io_subchannel_init_fields(struct subchannel *sch) io_subchannel_init_config(sch); } -static void io_subchannel_do_unreg(struct work_struct *work) -{ - struct subchannel *sch; - - sch = container_of(work, struct subchannel, work); - css_sch_device_unregister(sch); - put_device(&sch->dev); -} - -/* Schedule unregister if we have no cdev. */ -static void io_subchannel_schedule_removal(struct subchannel *sch) -{ - get_device(&sch->dev); - INIT_WORK(&sch->work, io_subchannel_do_unreg); - queue_work(slow_path_wq, &sch->work); -} - /* * Note: We always return 0 so that we bind to the device even on error. * This is needed so that our remove function is called on unregister. @@ -1124,7 +1107,9 @@ static int io_subchannel_probe(struct subchannel *sch) return 0; out_schedule: - io_subchannel_schedule_removal(sch); + spin_lock_irq(sch->lock); + css_sched_sch_todo(sch, SCH_TODO_UNREG); + spin_unlock_irq(sch->lock); return 0; } @@ -1469,6 +1454,8 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) spin_lock_irqsave(sch->lock, flags); if (!device_is_registered(&sch->dev)) goto out_unlock; + if (work_pending(&sch->todo_work)) + goto out_unlock; action = sch_get_action(sch); CIO_MSG_EVENT(2, "event: sch 0.%x.%04x, process=%d, action=%d\n", sch->schid.ssid, sch->schid.sch_no, process, |