From: Peter Oberparleiter Date: Mon, 7 Aug 2006 15:00:33 +0000 (+0200) Subject: [S390] lost interrupt after chpid vary off/on cycle. X-Git-Tag: v2.6.18-rc5~126^2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65200c291c4ce397835d8232eaa0878b765a9bce;p=linux-2.6 [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 Signed-off-by: Martin Schwidefsky --- diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 7a39e0b038..6d91c2eb20 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -772,6 +772,7 @@ ccw_device_online_verify(struct ccw_device *cdev, enum dev_event dev_event) stsch(sch->schid, &sch->schib); if (sch->schib.scsw.actl != 0 || + (sch->schib.scsw.stctl & SCSW_STCTL_STATUS_PEND) || (cdev->private->irb.scsw.stctl & SCSW_STCTL_STATUS_PEND)) { /* * No final status yet or final status not yet delivered