Sebastian Ott 0f5d050cea s390/cio: allow to reset channel measurement block ... Prior to commit 1bc6664bdf a call to enable_cmf for a device for which channel measurement was already enabled resulted in a reset of the measurement data. What looked like bugs at the time (a 2nd allocation was triggered but failed, reset was called regardless of previous failures, and errors have not been reported to userspace) was actually something at least one userspace tool depended on. Restore that behavior in a sane way. Fixes: 1bc6664bdf ("s390/cio: use device_lock during cmb activation") Cc: stable@vger.kernel.org #v4.4+ Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2016-07-14 13:01:49 +02:00
..
airq.c	s390/cio: Introduce common I/O layer tracepoints	2015-12-18 14:59:36 +01:00
blacklist.c	s390: Use pr_warn instead of pr_warning	2016-03-07 13:12:04 +01:00
blacklist.h
ccwgroup.c	s390/ccwgroup: use ccwgroup_ungroup wrapper	2014-06-16 10:32:52 +02:00
ccwreq.c	s390: Use pr_warn instead of pr_warning	2016-03-07 13:12:04 +01:00
chp.c	s390/cio: update measurement characteristics	2016-01-26 12:47:51 +01:00
chp.h	s390: use canonical include guard style	2016-06-13 15:58:17 +02:00
chsc_sch.c	s390/cio: Remove unused inline assemblies	2015-12-18 14:59:33 +01:00
chsc_sch.h
chsc.c	s390/time: STP sync clock correction	2016-06-13 15:58:19 +02:00
chsc.h	s390: add support for ipl devices in subchannel sets > 0	2015-11-11 13:56:27 +01:00
cio_debug.h
cio.c	s390: Use pr_warn instead of pr_warning	2016-03-07 13:12:04 +01:00
cio.h	s390/cio: Consolidate inline assemblies and related data definitions	2015-12-18 14:59:34 +01:00
cmf.c	s390/cio: allow to reset channel measurement block	2016-07-14 13:01:49 +02:00
crw.c	s390/cio: Consolidate inline assemblies and related data definitions	2015-12-18 14:59:34 +01:00
css.c	s390/cio: Remove unused inline assemblies	2015-12-18 14:59:33 +01:00
css.h	s390/cio: Delay scan for newly available I/O devices	2013-12-16 14:37:41 +01:00
device_fsm.c	s390/cio: Remove unused inline assemblies	2015-12-18 14:59:33 +01:00
device_id.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
device_ops.c	s390/cio: move ccw_device_stlck functions	2015-10-27 09:34:44 +01:00
device_pgid.c	s390/cio: move ccw_device_stlck functions	2015-10-27 09:34:44 +01:00
device_status.c	s390/comments: unify copyright messages and remove file names	2012-07-20 11:15:04 +02:00
device.c	s390: Use pr_warn instead of pr_warning	2016-03-07 13:12:04 +01:00
device.h	s390/cio: move ccw_device_stlck functions	2015-10-27 09:34:44 +01:00
eadm_sch.c	s390: remove unneeded variables	2015-08-07 09:57:01 +02:00
eadm_sch.h	s390/eadm_sch: improve quiesce handling	2013-10-24 17:16:58 +02:00
fcx.c	[S390] drivers: Correct size given to memset	2009-12-18 17:43:32 +01:00
idset.c	s390/cio: idset.c: remove some unused functions	2015-01-08 10:02:50 +01:00
idset.h	s390: use canonical include guard style	2016-06-13 15:58:17 +02:00
io_sch.h	s390/cio: Consolidate inline assemblies and related data definitions	2015-12-18 14:59:34 +01:00
ioasm.c	s390/cio: use basic blocks for i/o inline assemblies	2016-06-28 09:32:34 +02:00
ioasm.h	s390/cio: Change I/O instructions from inline to normal functions	2015-12-18 14:59:37 +01:00
isc.c
itcw.c	[S390] cio: reduce memory consumption of itcw structures	2011-01-05 12:47:29 +01:00
Makefile	s390/cio: Change I/O instructions from inline to normal functions	2015-12-18 14:59:37 +01:00
orb.h	s390: add eadm related structures	2012-09-26 15:44:57 +02:00
qdio_debug.c	s390: Delete unnecessary checks before the function call "debug_unregister"	2015-11-27 09:24:16 +01:00
qdio_debug.h	qdio: Keep device-specific dbf entries	2014-06-16 10:31:58 +02:00
qdio_main.c	s390/qdio: fix WARN_ON_ONCE condition	2015-10-07 04:52:06 -07:00
qdio_setup.c	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
qdio_thinint.c	s390/airq: simplify adapter interrupt code	2013-06-26 21:10:28 +02:00
qdio.h	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
scm.c	s390/scm_block: do not hide eadm subchannel dependency	2013-11-15 14:08:42 +01:00
trace.c	s390/cio: Introduce common I/O layer tracepoints	2015-12-18 14:59:36 +01:00
trace.h	s390/cio: Introduce common I/O layer tracepoints	2015-12-18 14:59:36 +01:00