Julian Wiedmann 4eebf3147c s390/qdio: handle PENDING state for QEBSM devices ...

[ Upstream commit 04310324c6 ]

When a CQ-enabled device uses QEBSM for SBAL state inspection,
get_buf_states() can return the PENDING state for an Output Queue.
get_outbound_buffer_frontier() isn't prepared for this, and any PENDING
buffer will permanently stall all further completion processing on this
Queue.

This isn't a concern for non-QEBSM devices, as get_buf_states() for such
devices will manually turn PENDING buffers into EMPTY ones.

Fixes: 104ea556ee ("qdio: support asynchronous delivery of storage blocks")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2019-08-04 09:33:18 +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

[PATCH] s390: multiple subchannel sets support

2006-01-06 08:33:52 -08:00

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: don't register chpids in reserved state

2016-10-17 11:25:25 +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: update chpid descriptor after resource accessibility event

2018-04-29 11:32:02 +02:00

chsc.h

s390/chsc: improve channel path descriptor determination

2016-07-15 14:32:01 +02:00

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: fix cio_irb declaration

2019-05-31 06:48:26 -07:00

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: clear timer when terminating driver I/O

2018-05-30 07:50:29 +02:00

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: fix ccw_device_start_timeout API

2018-05-30 07:50:29 +02:00

device_pgid.c

s390/cio: move ccw_device_stlck functions

2015-10-27 09:34:44 +01:00

device_status.c

s390/cio: stop using subchannel_id from ccw_device_private

2016-08-08 15:41:32 +02:00

device.c

s390/cio: remove subchannel_id from ccw_device_private

2016-08-08 15:41:33 +02:00

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: fix return code after missing interrupt

2018-05-30 07:50:29 +02:00

ioasm.c

s390/chsc: Add exception handler for CHSC instruction

2017-03-15 10:02:41 +08:00

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: handle PENDING state for QEBSM devices

2019-08-04 09:33:18 +02:00

qdio_setup.c

s390/qdio: (re-)initialize tiqdio list entries

2019-07-21 09:06:08 +02:00

qdio_thinint.c

s390/qdio: don't touch the dsci in tiqdio_add_input_queues()

2019-07-21 09:06:08 +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