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s390/cio: unregister the subchannel while purging

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The cio_ignore list is used to create and maintain the list of devices
which is to be ignored by Linux. During boot-time, this list is adjusted
and accommodate all the devices which are configured on the HMC
interface. Once these devices are accessible, they are then available to
Linux and set online.

cio_ignore purge function should align with this functionality. But
currently, the subchannel associated with the offline-devices are not
unregistered during purge. Add an explicit subchannel-unregister function
in the purge_fn callback.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vineeth Vijayan 2021-09-15 13:39:16 +02:00 committed by Vasily Gorbik
parent 1c8174fdc7
commit fa172f043f
1 changed files with 2 additions and 0 deletions
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2
drivers/s390/cio/device.c
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@ -1322,6 +1322,7 @@ static int purge_fn(struct device *dev, void *data)
{
struct ccw_device *cdev = to_ccwdev(dev);
struct ccw_dev_id *id = &cdev->private->dev_id;
struct subchannel *sch = to_subchannel(cdev->dev.parent);
spin_lock_irq(cdev->ccwlock);
if (is_blacklisted(id->ssid, id->devno) &&
@ -1330,6 +1331,7 @@ static int purge_fn(struct device *dev, void *data)
CIO_MSG_EVENT(3, "ccw: purging 0.%x.%04x\n", id->ssid,
id->devno);
ccw_device_sched_todo(cdev, CDEV_TODO_UNREG);
css_sched_sch_todo(sch, SCH_TODO_UNREG);
atomic_set(&cdev->private->onoff, 0);
}
spin_unlock_irq(cdev->ccwlock);