------- Comment From vineeth.vija...@ibm.com 2021-04-23 01:50 EDT-------
---snip---
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1525,8 +1525,7 @@ static int io_subchannel_sch_event(struct subchannel
*sch, int process)
switch (action) {
case IO_SCH_ORPH_UNREG:
case IO_SCH_UNREG:
- if (!cdev)
- css_sch_device_unregister(sch);
+ css_sch_device_unregister(sch);
break;
case IO_SCH_ORPH_ATTACH:
case IO_SCH_UNREG_ATTACH:
I think we'd want an answer from the IBM devs which solution (full revert,
kaihenfeng patch, cpaelzer patch, another approach) they would prefer - then we
can submit it upstream for them to include officially and we can carry it as
delta until we rebase onto a version that has it applied anyway.
---snip---
Thank you very much for reporting this. Yes. This is a leftover from the
pm-remove patch and the right solution is as mentioned above here. We
shall prepare the patch and share it to the external mailing-list.
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https://bugs.launchpad.net/bugs/1925211
Title:
Hot-unplug of disks leaves broken block devices around in Hirsute on
s390x
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