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linux/drivers/base
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Andrey Golovko 00268f9452
regmap: sdw-mbq: don't call an unset readable_reg callback 
regmap_sdw_mbq_poll_busy() decides whether to poll the Function Busy bit
by calling ctx->readable_reg(), which is a straight copy of
config->readable_reg. That callback is optional: regmap_readable() treats
a NULL ->readable_reg as "every register is readable", and drivers rely on
that. es9356 and tac5xx2-sdw both build an MBQ regmap without one.

Since commit ca1b11b36d ("regmap: sdw-mbq: Allow defers on undeferrable
controls") the poll runs on every -ENODATA, not only for Controls the
driver marked deferrable, so any of those devices answering
COMMAND_IGNORED takes the kernel through a NULL function pointer.

Treat a missing callback the way the rest of regmap does and poll.

Fixes: 5bc493bf0c ("regmap: sdw-mbq: Add support for SDCA deferred controls")
Signed-off-by: Andrey Golovko <andrey.golovko@gmail.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20260811184500.5312-1-andrey.golovko@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2026-08-12 18:08:48 +01:00
..
firmware_loader sound updates for 7.2-rc1 2026-06-17 11:18:45 +01:00
power bpf-next-7.2 2026-06-17 09:18:14 +01:00
regmap regmap: sdw-mbq: don't call an unset readable_reg callback 2026-08-12 18:08:48 +01:00
test drivers: base: test: Add ...find_device_by...(... NULL) tests 2024-12-24 09:48:09 +01:00
arch_numa.c arch_numa: Restore nid checks before registering a memblock with a node 2024-12-01 22:04:52 +02:00
arch_topology.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
attribute_container.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
auxiliary_sysfs.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
auxiliary.c ACPI support updates for 7.1-rc1 2026-04-13 19:25:07 -07:00
base.h driver core: constify group arrays arguments in driver_add_groups and driver_remove_groups 2026-05-22 13:32:05 +02:00
bus.c driver core: reject devices with unregistered buses 2026-05-02 17:50:50 +02:00
cacheinfo.c sched/cache: Calculate the LLC size and store it in sched_domain 2026-05-18 21:33:15 +02:00
class.c kernfs: pass struct ns_common instead of const void * for namespace tags 2026-04-09 14:36:52 +02:00
component.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
container.c driver core: container: make container_subsys const 2023-12-21 13:56:10 +01:00
core.c driver core: Constify core device attributes 2026-05-22 13:36:55 +02:00
cpu.c driver core: Replace dev->offline + ->offline_disabled with accessors 2026-04-26 23:51:02 +02:00
dd.c driver core: Use system_percpu_wq instead of system_wq 2026-06-02 15:08:56 +02:00
devcoredump.c devcoredump: Remove exit call 2026-05-22 13:26:51 +02:00
devres.c devres: rename and export set_node_dbginfo() 2026-03-18 00:02:59 +01:00
devtmpfs.c devtmpfs: Replace simple_strtoul with kstrtoint in mount_param 2026-01-16 16:44:43 +01:00
driver.c driver core: remove driver_set_override() 2026-05-30 22:25:50 +02:00
faux.c driver core: faux: clean up init error handling 2026-05-02 17:50:50 +02:00
firmware.c
hypervisor.c
init.c driver core: make software nodes available earlier 2026-04-04 00:33:49 +02:00
isa.c isa: switch to dynamic root device 2026-05-04 22:05:03 +02:00
Kconfig driver core: Make deferred_probe_timeout default a Kconfig option 2026-03-30 20:45:27 +02:00
Makefile Revert "revocable: Add Kunit test cases" 2026-02-06 16:08:48 +01:00
map.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
memory.c mm.git review status for mm-hotfixes-stable..mm-stable 2026-06-19 10:14:34 -07:00
module.c drivers: base: handle module_kobject creation 2025-04-16 15:10:55 +02:00
node.c drivers/base/memory: make memory block get/put explicit 2026-06-02 15:22:12 -07:00
physical_location.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
physical_location.h driver core: physical_location.h remove extern from function prototypes 2023-03-24 15:35:48 +01:00
pinctrl.c driver core: Replace dev->of_node_reused with dev_of_node_reused() 2026-04-26 23:50:20 +02:00
platform-msi.c platform-msi: Remove stale comment 2026-02-26 10:48:19 +01:00
platform.c driver core: platform: set mod_name in driver registration 2026-06-08 23:28:24 +02:00
property.c device property: fix fwnode reference leak in fwnode_graph_get_endpoint_by_id() 2026-05-22 13:33:09 +02:00
soc.c base: soc: rename and export soc_device_get_machine() 2026-03-12 16:18:49 +01:00
swnode.c software node: provide wrappers around kobject_get/put() 2026-05-09 20:22:40 +02:00
syscore.c syscore: Pass context data to callbacks 2025-11-14 10:01:52 +01:00
topology.c sysfs: treewide: switch back to attribute_group::bin_attrs 2025-06-17 10:44:15 +02:00
trace.c devres: Enable trace events 2021-06-15 17:14:36 +02:00
trace.h devres: Fix page faults when tracing devres from unloaded modules 2024-10-14 08:21:09 +02:00
transport_class.c SCSI misc on 20260212 2026-02-12 15:43:02 -08:00