Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-26 22:21:42 +00:00
Code Issues Packages Projects Releases Wiki Activity

vfio/ccw: Check return code from subchannel quiesce

Browse Source 
If a subchannel is busy when a close is performed, the subchannel
needs to be quiesced and left nice and tidy, so nothing unexpected
(like a solicited interrupt) shows up while in the closed state.
Unfortunately, the return code from this call isn't checked,
so any busy subchannel is treated as a failing one.

Fix that, so that the close on a busy subchannel happens normally.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20220728204914.2420989-4-farman@linux.ibm.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Eric Farman 2022-07-28 22:49:14 +02:00 committed by Alex Williamson
parent 96a4c9ecae
commit 4eb919663d
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/s390/cio/vfio_ccw_fsm.c
View File

@ -407,7 +407,7 @@ static void fsm_close(struct vfio_ccw_private *private,
ret = cio_disable_subchannel(sch);
if (ret == -EBUSY)
vfio_ccw_sch_quiesce(sch);
ret = vfio_ccw_sch_quiesce(sch);
if (ret)
goto err_unlock;