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Vineeth Vijayan ca34cda73f s390/cio: evaluate devices with non-operational paths 
css_schedule_reprobe() function calls the evaluation for CSS_EVAL_UNREG
which is specific to the idset of unregistered subchannels. This
evaluation was introduced because, previously, if the underlying device
become not-accessible, the subchannel was unregistered. But, in the recent
changes in cio,with the commit '2297791c92 s390/cio: dont unregister
subchannel from child-drivers', we no  longer unregister the subchannels
just because of a non-operational device. This allows to have subchannels
without any operational device connected on it. So, a css_schedule_reprobe
function on unregistered subchannel does not have any effect.

Change this functionality to evaluate the subchannels which does not
have a working path to the device. This could be due the erroneous
device or due to the erraneous path. Evaluate based on the values of OPM
and PAM&POM.
Here we introduced a new idset function,to keep I/O subchannels in the
idset when the last seen status indicates that the device has no working
path. A device has no working path if all available paths have been tried
without success.A failed I/O attempt on a path is indicated as a 0 bit
value in the POM mask. By looking at the POM mask bit values of available
paths (1 in PAM) that Linux is supposed to use (1 in vary mask OPM), we
can identify a non-working device as a device where the bit-wise and of
the PAM, POM and OPM mask return 0.

css_schedule_reprobe() is being used by dasd-driver and chsc-cio
component. dasd driver, when it detects a change in the pathgroup, invokes
the re-evaluation of the subchannel. And chsc-cio component upon a CRW
event, (resource accessibility event). In both the cases, it makes much
better sense to re-evalute the subchannel with no-valid path.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reported-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Tested-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
History 2023-01-22 18:42:34 +01:00
..
accel Fix mismerge due to devnode now taking a 'const *' device 2022-12-16 13:04:15 -06:00
accessibility speakup: Fix building as extmod 2022-11-23 19:55:03 +01:00
acpi ACPI fixes for 6.2-rc2 2022-12-30 10:47:25 -08:00
amba ARM updates for 6.2 2022-12-13 15:22:14 -08:00
android binder: validate alloc->mm in ->mmap() handler 2022-11-09 15:41:27 +01:00
ata ata: ahci: Fix PCS quirk application for suspend 2022-12-27 11:06:57 +09:00
atm treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
auxdisplay i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
base Kbuild updates for v6.2 2022-12-19 12:33:32 -06:00
bcma bcma: Fail probe if GPIO subdriver fails 2022-11-04 12:59:51 +02:00
block block-2023-01-06 2023-01-06 13:12:42 -08:00
bluetooth treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
bus Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
cdrom block: remove blk_cleanup_disk 2022-06-28 06:33:15 -06:00
char tpm: Allow system suspend to continue when TPM suspend fails 2023-01-06 14:25:19 -08:00
clk A pile of clk driver updates with a small tracepoint patch to the clk core this 2022-12-13 13:46:07 -08:00
clocksource Updates for timers, timekeeping and drivers: 2022-12-12 12:52:02 -08:00
comedi comedi: convert sysfs snprintf to sysfs_emit 2022-09-09 10:37:52 +02:00
connector connector/cn_proc: Use task_is_in_init_pid_ns() 2022-01-26 18:57:09 -08:00
counter counter: stm32-lptimer-cnt: fix the check on arr and cmp registers update 2022-11-26 16:49:28 -05:00
cpufreq linux-kselftest-next-6.2-rc1 2022-12-12 16:39:38 -08:00
cpuidle powerpc updates for 6.2 2022-12-19 07:13:33 -06:00
crypto This push fixes a CFI crash in arm64/sm4 as well as a regression 2023-01-06 11:14:11 -08:00
cxl cxl/region: Fix memdev reuse check 2022-12-08 13:03:47 -08:00
dax device-dax: Fix duplicate 'hmem' device registration 2022-11-21 15:34:40 -08:00
dca dca: Use PTR_ERR_OR_ZERO() to simplify code 2020-05-15 16:25:20 +02:00
devfreq PM / devfreq: event: use devm_platform_get_and_ioremap_resource() 2022-12-05 21:57:20 +09:00
dio drivers: dio: fix possible memory leak in dio_init() 2022-11-09 15:12:37 +01:00
dma dmaengine updates for v6.2 2022-12-19 08:54:17 -06:00
dma-buf Merge drm/drm-fixes into drm-misc-fixes 2023-01-03 08:32:12 +01:00
edac Merge branches 'edac-ghes' and 'edac-misc' into edac-updates-for-v6.2 2022-12-12 15:40:03 +01:00
eisa EISA: use DEVICE_ATTR_RO() helper macro 2021-06-04 15:28:34 +02:00
extcon Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
firewire firewire: net: Make use of get_unaligned_be48(), put_unaligned_be48() 2022-07-28 22:21:54 -07:00
firmware remoteproc updates for v6.2 2022-12-21 09:37:14 -08:00
fpga Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
fsi use less confusing names for iov_iter direction initializers 2022-11-25 13:01:55 -05:00
gnss driver core: make struct class.dev_uevent() take a const * 2022-11-24 17:12:15 +01:00
gpio gpio: sifive: Fix refcount leak in sifive_gpio_probe 2023-01-02 13:01:14 +01:00
gpu Only gvt-fixes: 2023-01-06 10:16:49 +01:00
greybus greybus: svc: Use kstrtobool() instead of strtobool() 2022-11-10 19:03:58 +01:00
hid treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
hsi HSI: omap_ssi_core: Fix error handling in ssi_init() 2022-11-25 01:04:21 +01:00
hte hte: Uninitialized variable in hte_ts_get() 2022-05-20 15:54:41 +02:00
hv Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
hwmon hwmon updates for v6.2 merge window 2022-12-13 13:09:38 -08:00
hwspinlock hwspinlock: qcom: add support for MMIO on older SoCs 2022-09-13 17:01:18 -05:00
hwtracing coresight: etm4x: fix repeated words in comments 2022-11-28 18:29:53 +00:00
i2c Core got a new helper 'i2c_client_get_device_id', designware got some 2022-12-15 14:47:10 -08:00
i3c i3c: export SETDASA method 2022-12-11 21:25:58 +01:00
idle intel_idle: Add AlderLake-N support 2022-09-21 20:33:49 +02:00
iio Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
infiniband RDMA/mlx5: Fix validation of max_rd_atomic caps for DC 2023-01-01 09:40:35 +02:00
input treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
interconnect Merge branch 'icc-sc8280xp-l3' into icc-next 2022-11-17 17:44:14 +02:00
iommu IOMMU Updates for Linux v6.2 2022-12-19 08:34:39 -06:00
ipack Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
irqchip RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
isdn treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
leds treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
macintosh macintosh/macio-adb: check the return value of ioremap() 2022-11-24 23:12:18 +11:00
mailbox - qcom: enable sc8280xp, sm8550 and sm4250 support 2022-12-21 09:31:18 -08:00
mcb mcb: mcb-parse: fix error handing in chameleon_parse_gdd() 2022-12-02 17:48:04 +01:00
md block: handle bio_split_to_limits() NULL return 2023-01-04 09:05:23 -07:00
media treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
memory ARM updates for 6.2 2022-12-13 15:22:14 -08:00
memstick memstick/mspro_block: Convert to use sysfs_emit()/sysfs_emit_at() APIs 2022-12-09 10:29:58 +01:00
message scsi: message: fusion: Remove variable 'where' 2022-11-08 03:00:52 +00:00
mfd - New Drivers 2022-12-21 09:19:24 -08:00
misc kernel hardening fixes for v6.2-rc1 2022-12-23 12:00:24 -08:00
mmc MMC core: 2022-12-13 13:41:26 -08:00
most most: usb: replace snprintf in show functions with sysfs_emit 2021-11-26 17:03:47 +01:00
mtd MTD core changes: 2022-12-13 12:32:07 -08:00
mux mux: Fix struct mux_state kernel-doc comment 2022-02-04 15:47:12 +01:00
net Including fixes from bpf, wifi, and netfilter. 2023-01-05 12:40:50 -08:00
nfc treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
ntb NTB: epf: Allow more flexibility in the memory BAR map method 2022-08-09 17:54:03 -04:00
nubus proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
nvdimm nvdimm/region: Move cache management to the region driver 2022-12-02 23:52:32 -08:00
nvme block-2023-01-06 2023-01-06 13:12:42 -08:00
nvmem Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
of of: fdt: Honor CONFIG_CMDLINE* even without /chosen node, take 2 2023-01-04 21:31:59 -06:00
opp OPP: decouple dt properties in opp_parse_supplies() 2022-11-04 10:59:07 +05:30
parisc parisc: led: Fix potential null-ptr-deref in start_task() 2022-12-17 23:19:38 +01:00
parport parport_pc: Avoid FIFO port location truncation 2022-11-09 15:40:32 +01:00
pci phy-for-6.2 2022-12-19 08:40:58 -06:00
pcmcia treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
peci peci: cpu: Fix use-after-free in adev_release() 2022-08-15 20:31:35 +02:00
perf RISC-V Patches for the 6.2 Merge Window, Part 1 2022-12-14 15:23:49 -08:00
phy phy-for-6.2 2022-12-19 08:40:58 -06:00
pinctrl Pin control changes for the v6.2 kernel cycle: 2022-12-13 13:03:06 -08:00
platform USB/Thunderbolt driver changes for 6.2-rc1 2022-12-16 03:22:53 -08:00
pnp PNP: Do not disable devices on suspend when they cannot be re-enabled on resume 2022-11-25 19:36:52 +01:00
power power supply and reset changes for the v6.2 series 2022-12-17 08:39:31 -06:00
powercap powercap: idle_inject: Fix warnings with make W=1 2022-12-02 20:49:49 +01:00
pps pps: generators: pps_gen_parport: Switch to use module_parport_driver() 2022-03-18 14:01:19 +01:00
ps3 drivers/ps3: Fix double word in comments 2022-11-24 23:31:47 +11:00
ptp Networking changes for 6.2. 2022-12-13 15:47:48 -08:00
pwm pwm: Changes for v6.2-rc1 2022-12-21 09:41:28 -08:00
rapidio rapidio: devices: fix missing put_device in mport_cdev_open 2022-12-11 19:30:20 -08:00
ras RAS: Fix return value from show_trace() 2022-10-31 18:55:18 +01:00
regulator regulator: Fixes for v6.2 2022-12-23 14:38:00 -08:00
remoteproc remoteproc: core: Do pm_relax when in RPROC_OFFLINE state 2022-12-07 11:20:55 -07:00
reset Here's the main clk pull request for this merge window. We have some 2022-10-08 10:06:48 -07:00
rpmsg rpmsg: char: Avoid double destroy of default endpoint 2022-09-21 11:21:33 -06:00
rtc - New Drivers 2022-12-21 09:19:24 -08:00
s390 s390/cio: evaluate devices with non-operational paths 2023-01-22 18:42:34 +01:00
sbus sparc: sbus: treat CPU index as integer 2022-11-19 00:56:15 +01:00
scsi treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
sh genirq: Add and use an irq_data_update_affinity helper 2022-07-07 09:38:04 +01:00
siox siox: fix possible memory leak in siox_device_add() 2022-11-09 15:40:14 +01:00
slimbus slimbus: qcom-ngd-ctrl: reinit the reconf completion flag 2022-11-23 19:45:33 +01:00
soc ARM: SoC fixes for 6.2 2022-12-19 16:07:59 -06:00
soundwire soundwire updates for 6.2 2022-12-19 08:47:33 -06:00
spi spi: Fix for v6.2 2022-12-23 14:44:08 -08:00
spmi spmi: pmic-arb: Add support for PMIC v7 2022-11-10 18:37:59 +01:00
ssb ssb: gpio: Use generic_handle_irq_safe() 2022-09-19 15:08:38 +02:00
staging treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
target SCSI misc on 20221213 2022-12-14 08:58:51 -08:00
tc The main MIPS changes for 5.6: 2020-01-31 11:28:31 -08:00
tee SoC driver updates for 6.2 2022-12-12 10:17:08 -08:00
thermal thermal: int340x: Add missing attribute for data rate base 2022-12-30 19:48:37 +01:00
thunderbolt thunderbolt: Add wake on connect/disconnect on USB4 ports 2022-11-07 14:36:47 +02:00
tty treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
ufs SCSI misc on 20221213 2022-12-14 08:58:51 -08:00
uio uio: uio_dmem_genirq: Use non-atomic bit operations in irq config and handling 2022-11-10 18:54:29 +01:00
usb usb: dwc3: gadget: Ignore End Transfer delay on teardown 2023-01-06 16:32:10 +01:00
vdpa vdpa_sim_net: should not drop the multicast/broadcast packet 2022-12-28 05:28:11 -05:00
vfio Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
vhost vhost_vdpa: fix the crash in unmap a large memory 2022-12-28 05:28:11 -05:00
video fbdev: omapfb: avoid stack overflow warning 2023-01-05 11:43:27 +01:00
virt Char/Misc driver changes for 6.2-rc1 2022-12-16 03:49:24 -08:00
virtio virtio: Implementing attribute show with sysfs_emit 2022-12-28 05:28:11 -05:00
vlynq bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
w1 Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
watchdog linux-watchdog 6.2-rc1 tag 2022-12-17 08:34:01 -06:00
xen drm for 6.2: 2022-12-13 11:59:58 -08:00
zorro proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
Kconfig drivers/accel: define kconfig and register a new major 2022-11-22 13:13:51 +02:00
Makefile hwtracing: hisi_ptt: Add trace function support for HiSilicon PCIe Tune and Trace device 2022-09-08 16:26:17 -06:00