On 23.04.2021 12:08, Vineeth Vijayan wrote:
> The condition to check the cdev pointer validity on
> css_sch_device_unregister() is a leftover from the 'commit c97cd8c81d4a
> ("s390/cio: Remove pm support from ccw bus driver")'. This could lead to a
> situation, where detaching the disk is not happening completely. Remove
This applies to all devices types, not just disks. So replace "disk"
with either "device" or "subchannel".
> this invalid condition in the IO_SCH_UNREG case.
>
> Fixes: 8cc0dcfdc1c0 ("s390/cio: remove pm support from ccw bus driver")
> Reported-by: Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>
> Suggested-by: Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Vineeth Vijayan <vneethv@xxxxxxxxxxxxx>
Reviewed-by: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
--
Peter Oberparleiter
Linux on Z Development - IBM Germany
