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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2018-03-15 15:03:43 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-03-26 16:13:06 +0200 |
| commit | 135a8b4ce5d737115571f08c6d0649f1aed6a48a (patch) | |
| tree | 2c604872a0bea58568e5435a11797333364d53eb /arch/s390/include/asm/ccwdev.h | |
| parent | 88bf319fc2d6d971ef8692c2cae7f96708340461 (diff) | |
| download | talos-obmc-linux-135a8b4ce5d737115571f08c6d0649f1aed6a48a.tar.gz talos-obmc-linux-135a8b4ce5d737115571f08c6d0649f1aed6a48a.zip | |
s390/cio: fix unbind of io_subchannel_driver
If the io_subchannel_driver is unbound from a subchannel it bluntly kills
all I/O on the subchannel and sets the ccw_device state to not operable
before deregistering the ccw_device. However, for online devices we should
set the device offline (disband path groups etc.) which does not happen if
the device is in not oper state.
Simply deregister the ccw device - ccw_device_remove is smart enough to set
the device offline properly. If everything fails call io_subchannel_quiesce
afterwards as a safeguard.
Reported-by: Shalini Chellathurai Saroja <shalini@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/ccwdev.h')
0 files changed, 0 insertions, 0 deletions
