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Commit 16d2ce27 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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[S390] cio: fix incorrect ccw_device_init_count 



If device recognition is interrupted by a subchannel event
indicating that the device is gone, ccw_device_init_count
is not correctly decreased.

Fix this by reporting the corresponding event to the device
recognition callback via the state machine.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 3b210e76

drivers/s390/cio/device.c

+10 −1
Original line number Diff line number Diff line
@@ -1455,7 +1455,16 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) 
		break;

	case IO_SCH_UNREG_ATTACH:

	case IO_SCH_UNREG:

		if (cdev)

		if (!cdev)

			break;

		if (cdev->private->state == DEV_STATE_SENSE_ID) {

			/*

			 * Note: delayed work triggered by this event

			 * and repeated calls to sch_event are synchronized

			 * by the above check for work_pending(cdev).

			 */

			dev_fsm_event(cdev, DEV_EVENT_NOTOPER);

		} else

			ccw_device_set_notoper(cdev);

		break;

	case IO_SCH_NOP: