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71189f263f
linux_dsm_epyc7002/drivers/s390/cio
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Cornelia Huck 71189f263f vfio-ccw: make it safe to access channel programs 
When we get a solicited interrupt, the start function may have
been cleared by a csch, but we still have a channel program
structure allocated. Make it safe to call the cp accessors in
any case, so we can call them unconditionally.

While at it, also make sure that functions called from other parts
of the code return gracefully if the channel program structure
has not been initialized (even though that is a bug in the caller).

Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-04-24 14:18:51 +02:00
..
airq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.h s390: add a few more SPDX identifiers 2017-12-05 07:51:09 +01:00
ccwgroup.c s390/ccwgroup: add get_ccwgroupdev_by_busid() 2018-10-08 09:09:59 +02:00
ccwreq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chp.c s390/cio: ensure that a chpid is registered only once 2018-07-17 07:27:51 +02:00
chp.h s390/chsc: query utility strings via fmt3 channel path descriptor 2018-03-26 16:13:16 +02:00
chsc_sch.c compat: Move compat_timespec/ timeval to compat_time.h 2018-04-19 13:29:54 +02:00
chsc_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chsc.c s390 update with improvements and bug fixes for 5.1-rc2 2019-03-28 08:35:32 -07:00
chsc.h s390/cio: add function chsc_sgib() 2019-02-05 14:29:23 +01:00
cio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
cio.c s390/css: reduce stsch calls 2018-07-17 07:27:55 +02:00
cio.h s390: cio: fix cio_irb declaration 2019-04-10 17:48:33 +02:00
cmf.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
crw.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
css.c s390/css: reduce stsch calls 2018-07-17 07:27:55 +02:00
css.h s390/css: reduce stsch calls 2018-07-17 07:27:55 +02:00
device_fsm.c s390/cio: clear timer when terminating driver I/O 2018-02-22 10:09:27 +01:00
device_id.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_ops.c s390/cio: add helper to query utility strings per given ccw device 2018-05-23 08:06:56 +02:00
device_pgid.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_status.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device.c s390/cio: fix unbind of io_subchannel_driver 2018-03-26 16:13:06 +02:00
device.h s390/cio: Convert timers to use timer_setup() 2017-11-14 11:01:36 +01:00
eadm_sch.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
eadm_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fcx.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io_sch.h s390/cio: fix return code after missing interrupt 2018-02-22 10:09:25 +01:00
ioasm.c s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
ioasm.h s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
isc.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
itcw.c s390/cio: fix kernel-doc usage 2018-02-05 07:34:52 +01:00
Makefile vfio: ccw: add tracepoints for interesting error paths 2018-05-29 09:27:42 +02:00
orb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qdio_debug.c s390/qdio: eliminate queue's last_move cursor 2019-04-10 17:47:26 +02:00
qdio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
qdio_main.c s390/qdio: consolidate index tracking for queue scan 2019-04-18 10:10:32 +02:00
qdio_setup.c s390/qdio: clean up pci_out_supported() 2019-03-29 07:23:49 +01:00
qdio_thinint.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
qdio.h s390/qdio: eliminate queue's last_move cursor 2019-04-10 17:47:26 +02:00
scm.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.h s390 cio: Rewrite trace point class s390_class_schib 2018-07-23 13:49:56 +02:00
vfio_ccw_cp.c vfio-ccw: make it safe to access channel programs 2019-04-24 14:18:51 +02:00
vfio_ccw_cp.h vfio-ccw: make it safe to access channel programs 2019-04-24 14:18:51 +02:00
vfio_ccw_drv.c vfio: ccw: only free cp on final interrupt 2019-03-11 12:06:50 +01:00
vfio_ccw_fsm.c vfio-ccw: make it safe to access channel programs 2019-04-24 14:18:51 +02:00
vfio_ccw_ops.c s390/cio: Convert ccw_io_region to pointer 2018-09-27 16:32:50 +02:00
vfio_ccw_private.h vfio: ccw: Merge BUSY and BOXED states 2018-12-12 14:53:03 +01:00
vfio_ccw_trace.h vfio: ccw: add tracepoints for interesting error paths 2018-05-29 09:27:42 +02:00