[S390] lost interrupt after chpid vary off/on cycle.
I/O on a CCW device may stall if a channel path to that device is logicaly varied off/on. A user I/O interrupt can get misinterpreted as interrupt for an internal path verification operation due to a missing check and is therefore never reported to the device driver. Correct check for pending interruptions before starting path verification. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -772,6 +772,7 @@ ccw_device_online_verify(struct ccw_device *cdev, enum dev_event dev_event)
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stsch(sch->schid, &sch->schib);
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stsch(sch->schid, &sch->schib);
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if (sch->schib.scsw.actl != 0 ||
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if (sch->schib.scsw.actl != 0 ||
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(sch->schib.scsw.stctl & SCSW_STCTL_STATUS_PEND) ||
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(cdev->private->irb.scsw.stctl & SCSW_STCTL_STATUS_PEND)) {
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(cdev->private->irb.scsw.stctl & SCSW_STCTL_STATUS_PEND)) {
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/*
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/*
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* No final status yet or final status not yet delivered
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* No final status yet or final status not yet delivered
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