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[S390] cio: introduce ccw_device_schedule_sch_unregister

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Introduce ccw_device_schedule_sch_unregister as a wrapper for queuing
ccw_device_call_sch_unregister on the slow_path_wq. This wrapper
will be used in the next patch.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2009-03-31 19:16:04 +02:00 committed by Martin Schwidefsky
parent 156013ffd1
commit c4621a6264
2 changed files with 12 additions and 10 deletions
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21
drivers/s390/cio/device.c
View file

@ -310,8 +310,6 @@ static void ccw_device_remove_orphan_cb(struct work_struct *work)
put_device(&cdev->dev);
}
static void ccw_device_call_sch_unregister(struct work_struct *work);
static void
ccw_device_remove_disconnected(struct ccw_device *cdev)
{
@ -335,11 +333,10 @@ ccw_device_remove_disconnected(struct ccw_device *cdev)
spin_unlock_irqrestore(cdev->ccwlock, flags);
PREPARE_WORK(&cdev->private->kick_work,
ccw_device_remove_orphan_cb);
queue_work(slow_path_wq, &cdev->private->kick_work);
} else
/* Deregister subchannel, which will kill the ccw device. */
PREPARE_WORK(&cdev->private->kick_work,
ccw_device_call_sch_unregister);
queue_work(slow_path_wq, &cdev->private->kick_work);
ccw_device_schedule_sch_unregister(cdev);
}
/**
@ -1020,6 +1017,13 @@ static void ccw_device_call_sch_unregister(struct work_struct *work)
put_device(&sch->dev);
}
void ccw_device_schedule_sch_unregister(struct ccw_device *cdev)
{
PREPARE_WORK(&cdev->private->kick_work,
ccw_device_call_sch_unregister);
queue_work(slow_path_wq, &cdev->private->kick_work);
}
/*
* subchannel recognition done. Called from the state machine.
*/
@ -1036,9 +1040,7 @@ io_subchannel_recog_done(struct ccw_device *cdev)
/* Remove device found not operational. */
if (!get_device(&cdev->dev))
break;
PREPARE_WORK(&cdev->private->kick_work,
ccw_device_call_sch_unregister);
queue_work(slow_path_wq, &cdev->private->kick_work);
ccw_device_schedule_sch_unregister(cdev);
if (atomic_dec_and_test(&ccw_device_init_count))
wake_up(&ccw_device_init_wq);
break;
@ -1557,8 +1559,7 @@ static int purge_fn(struct device *dev, void *data)
goto out;
CIO_MSG_EVENT(3, "ccw: purging 0.%x.%04x\n", priv->dev_id.ssid,
priv->dev_id.devno);
PREPARE_WORK(&cdev->private->kick_work, ccw_device_call_sch_unregister);
queue_work(slow_path_wq, &cdev->private->kick_work);
ccw_device_schedule_sch_unregister(cdev);
out:
/* Abort loop in case of pending signal. */

1
drivers/s390/cio/device.h
View file

@ -87,6 +87,7 @@ int ccw_device_is_orphan(struct ccw_device *);
int ccw_device_recognition(struct ccw_device *);
int ccw_device_online(struct ccw_device *);
int ccw_device_offline(struct ccw_device *);
void ccw_device_schedule_sch_unregister(struct ccw_device *);
int ccw_purge_blacklisted(void);
/* Function prototypes for device status and basic sense stuff. */