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0b60137377
linux_dsm_epyc7002/drivers/s390/cio
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Sebastian Ott 0b60137377 s390/cio: make fmt1 channel path descriptor optional 
Not all machines / hypervisors support the chsc commands to fetch
the fmt1 descriptor. When these commands fail the channel path would
currently not be available to linux.

Since users of these descriptors can already deal with invalid data
make fetching it optional. The only data that is mandatory for us is
the fmt0 channel path descriptor.

Also make the return code for missing facilities in
chsc_get_channel_measurement_chars consistent to other functions.

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>
2016-07-15 14:31:59 +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: make fmt1 channel path descriptor optional 2016-07-15 14:31:59 +02:00
chp.h s390: use canonical include guard style 2016-06-13 15:58:17 +02:00
chsc_sch.c s390/chsc: fix ioctl CHSC_INFO_CU command 2016-07-15 14:31:58 +02:00
chsc_sch.h [S390] cio: Add chsc subchannel driver. 2008-07-14 10:02:12 +02:00
chsc.c s390/cio: make fmt1 channel path descriptor optional 2016-07-15 14:31:59 +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 [S390] cio: Remove cio_msg kernel parameter. 2008-05-07 09:23:01 +02:00
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/device_ops: fix kernel doc 2016-07-15 14:31:57 +02:00
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 [S390] cio: introduce isc_(un)register functions. 2008-07-14 10:02:11 +02:00
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