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Vadim Pasternak 71895f8bc8 hwmon: mlxreg-fan: Prevent fans from getting stuck at 0 RPM
[ Upstream commit 1180c79fbf36e4c02e76ae4658509523437e52a4 ]

The fans controlled by the driver can get stuck at 0 RPM if they are
configured below a 20% duty cycle. The driver tries to avoid this by
enforcing a minimum duty cycle of 20%, but this is done after the fans
are registered with the thermal subsystem. This is too late as the
thermal subsystem can set their current state before the driver is able
to enforce the minimum duty cycle.

Fix by setting the minimum duty cycle before registering the fans with
the thermal subsystem.

Fixes: d7efb2ebc7 ("hwmon: (mlxreg-fan) Extend driver to support multiply cooling devices")
Reported-by: Nikolay Aleksandrov <razor@blackwall.org>
Tested-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20250730201715.1111133-1-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-09-09 19:02:37 +02:00
arch x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings() 2025-09-09 19:02:29 +02:00
block blk-zoned: Fix a lockdep complaint about recursive locking 2025-09-04 16:55:46 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: acomp - Fix CFI failure due to type punning 2025-08-28 16:34:34 +02:00
Documentation dt-bindings: display/msm: qcom,mdp5: drop lut clock 2025-09-04 16:55:37 +02:00
drivers hwmon: mlxreg-fan: Prevent fans from getting stuck at 0 RPM 2025-09-09 19:02:37 +02:00
fs cifs: prevent NULL pointer dereference in UTF16 conversion 2025-09-09 19:02:34 +02:00
include mm: introduce and use {pgd,p4d}_populate_kernel() 2025-09-09 19:02:30 +02:00
init io_uring: fix breakage in EXPERT menu 2025-08-15 16:38:23 +02:00
io_uring io_uring/kbuf: always use READ_ONCE() to read ring provided buffer lengths 2025-09-04 16:55:43 +02:00
ipc - The 3 patch series "hung_task: extend blocking task stacktrace dump to 2025-05-31 19:12:53 -07:00
kernel audit: fix out-of-bounds read in audit_compare_dname_path() 2025-09-09 19:02:34 +02:00
lib lib/sbitmap: convert shallow_depth from one word to the whole sbitmap 2025-08-20 18:41:31 +02:00
LICENSES LICENSES: add CC0-1.0 license text 2025-05-21 14:54:17 +02:00
mm kunit: kasan_test: disable fortify string checker on kasan_strings() test 2025-09-09 19:02:30 +02:00
net batman-adv: fix OOB read/write in network-coding decode 2025-09-09 19:02:34 +02:00
rust rust: mm: mark VmaNew as transparent 2025-09-09 19:02:29 +02:00
samples samples/damon/mtier: support boot time enable setup 2025-08-20 18:41:35 +02:00
scripts rust: support Rust >= 1.91.0 target spec 2025-09-09 19:02:35 +02:00
security apparmor: Fix 8-byte alignment for initial dfa blob streams 2025-08-28 16:34:16 +02:00
sound ALSA: hda: tas2781: reorder tas2563 calibration variables 2025-09-09 19:02:36 +02:00
tools selftest: net: Fix weird setsockopt() in bind_bhash.c. 2025-09-09 19:02:28 +02:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt KVM: Allow CPU to reschedule while setting per-page memory attributes 2025-06-24 12:20:17 -07:00
.clang-format Linux 6.15-rc5 2025-05-06 16:39:25 +10:00
.clippy.toml rust: clean Rust 1.88.0's warning about clippy::disallowed_macros configuration 2025-05-07 00:11:47 +02:00
.cocciconfig
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: Retire Ralf Baechle 2024-11-12 15:48:59 +01:00
.gitattributes
.gitignore gitignore: allow .pylintrc to be tracked 2025-08-15 16:39:03 +02:00
.mailmap 11 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues 2025-07-24 19:13:30 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml
COPYING
CREDITS mm: update MAINTAINERS entry for HMM 2025-07-19 19:26:16 -07:00
Kbuild drm: ensure drm headers are self-contained and pass kernel-doc 2025-02-12 10:44:43 +02:00
Kconfig io_uring: Rename KConfig to Kconfig 2025-02-19 14:53:27 -07:00
MAINTAINERS 11 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues 2025-07-24 19:13:30 -07:00
Makefile Linux 6.16.5 2025-09-04 16:55:53 +02:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

Linux kernel

There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first.

In order to build the documentation, use make htmldocs or make pdfdocs. The formatted documentation can also be read online at:

https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory, several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.