PWN-Hunter/android_kernel_xiaomi_sdm845
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[S390] cio: Call cancel_halt_clear even when actl == 0.

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The subchannel may just be status pending, even with actl == 0. We
must go through the cancel_halt_clear procedure to put the subchannel
into a defined state.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Cornelia Huck 2007-03-05 23:36:02 +01:00 committed by Martin Schwidefsky
parent 7c8427c3fa
commit 2470b648e1
1 changed files with 2 additions and 2 deletions
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4
drivers/s390/cio/device_fsm.c
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@ -144,8 +144,8 @@ ccw_device_cancel_halt_clear(struct ccw_device *cdev)
ret = stsch(sch->schid, &sch->schib);
if (ret || !sch->schib.pmcw.dnv)
return -ENODEV;
if (!sch->schib.pmcw.ena || sch->schib.scsw.actl == 0)
/* Not operational or no activity -> done. */
if (!sch->schib.pmcw.ena)
/* Not operational -> done. */
return 0;
/* Stage 1: cancel io. */
if (!(sch->schib.scsw.actl & SCSW_ACTL_HALT_PEND) &&