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Commit c4621a62 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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[S390] cio: introduce ccw_device_schedule_sch_unregister 



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: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 156013ff

drivers/s390/cio/device.c

+11 −10
Original line number Diff line number Diff line
@@ -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. */

drivers/s390/cio/device.h

+1 −0
Original line number Diff line number Diff line
@@ -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. */