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Bitterblue Smith d837d4c72b wifi: rtw88: Use led->brightness_set_blocking for PCI too 
[ Upstream commit fce6fee081 ]

Commit 26a8bf978a ("wifi: rtw88: Lock rtwdev->mutex before setting
the LED") made rtw_led_set() sleep, but that's not allowed. Fix it by
using the brightness_set_blocking member of struct led_classdev for
PCI devices too. This one is allowed to sleep.

bad: scheduling from the idle thread!
nix kernel: CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Tainted: G        W  O        6.16.0 #1-NixOS PREEMPT(voluntary)
nix kernel: Tainted: [W]=WARN, [O]=OOT_MODULE
nix kernel: Hardware name: [REDACTED]
nix kernel: Call Trace:
nix kernel:  <IRQ>
nix kernel:  dump_stack_lvl+0x63/0x90
nix kernel:  dequeue_task_idle+0x2d/0x50
nix kernel:  __schedule+0x191/0x1310
nix kernel:  ? xas_load+0x11/0xd0
nix kernel:  schedule+0x2b/0xe0
nix kernel:  schedule_preempt_disabled+0x19/0x30
nix kernel:  __mutex_lock.constprop.0+0x3fd/0x7d0
nix kernel:  rtw_led_set+0x27/0x60 [rtw_core]
nix kernel:  led_blink_set_nosleep+0x56/0xb0
nix kernel:  led_trigger_blink+0x49/0x80
nix kernel:  ? __pfx_tpt_trig_timer+0x10/0x10 [mac80211]
nix kernel:  call_timer_fn+0x2f/0x140
nix kernel:  ? __pfx_tpt_trig_timer+0x10/0x10 [mac80211]
nix kernel:  __run_timers+0x21a/0x2b0
nix kernel:  run_timer_softirq+0x8e/0x100
nix kernel:  handle_softirqs+0xea/0x2c0
nix kernel:  ? srso_alias_return_thunk+0x5/0xfbef5
nix kernel:  __irq_exit_rcu+0xdc/0x100
nix kernel:  sysvec_apic_timer_interrupt+0x7c/0x90
nix kernel:  </IRQ>
nix kernel:  <TASK>
nix kernel:  asm_sysvec_apic_timer_interrupt+0x1a/0x20
nix kernel: RIP: 0010:cpuidle_enter_state+0xcc/0x450
nix kernel: Code: 00 e8 08 7c 2e ff e8 d3 ee ff ff 49 89 c6 0f 1f 44 00 00 31 ff e8 c4 d1 2c ff 80 7d d7 00 0f 85 5d 02 00 00 fb 0f 1f 44 00 00 <45> 85 ff 0f 88 a0 01 00 00 49 63 f7 4c 89 f2 48 8d 0>
nix kernel: RSP: 0018:ffffd579801c7e68 EFLAGS: 00000246
nix kernel: RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
nix kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
nix kernel: RBP: ffffd579801c7ea0 R08: 0000000000000000 R09: 0000000000000000
nix kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8eab0462a400
nix kernel: R13: ffffffff9a7d7a20 R14: 00000003aebe751d R15: 0000000000000003
nix kernel:  ? cpuidle_enter_state+0xbc/0x450
nix kernel:  cpuidle_enter+0x32/0x50
nix kernel:  do_idle+0x1b1/0x210
nix kernel:  cpu_startup_entry+0x2d/0x30
nix kernel:  start_secondary+0x118/0x140
nix kernel:  common_startup_64+0x13e/0x141
nix kernel:  </TASK>

Fixes: 26a8bf978a ("wifi: rtw88: Lock rtwdev->mutex before setting the LED")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/ad8a49ef-4f2d-4a61-8292-952db9c4eb65@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-15 12:03:46 +02:00
arch arm64: dts: apple: Add ethernet0 alias for J375 template 2025-10-15 12:03:35 +02:00
block blk-throttle: fix throtl_data leak during disk release 2025-10-15 12:03:34 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: rng - Ensure set_ent is always present 2025-10-12 13:01:57 +02:00
Documentation docs: iio: ad3552r: Fix malformed code-block directive 2025-10-15 12:03:43 +02:00
drivers wifi: rtw88: Use led->brightness_set_blocking for PCI too 2025-10-15 12:03:46 +02:00
fs f2fs: fix to allow removing qf_name 2025-10-15 12:03:45 +02:00
include HID: i2c-hid: Make elan touch controllers power on after panel is enabled 2025-10-15 12:03:46 +02:00
init Fix CC_HAS_ASM_GOTO_OUTPUT on non-x86 architectures 2025-10-15 12:03:13 +02:00
io_uring io_uring-6.17-20250919 2025-09-19 12:10:49 -07:00
ipc vfs-6.17-rc1.mmap_prepare 2025-07-28 13:43:25 -07:00
kernel bpf: Enforce expected_attach_type for tailcall compatibility 2025-10-15 12:03:39 +02:00
lib vdso/datastore: Gate time data behind CONFIG_GENERIC_GETTIMEOFDAY 2025-10-15 12:03:24 +02:00
LICENSES LICENSES: Replace the obsolete address of the FSF in the GFDL-1.2 2025-07-24 11:15:39 +02:00
mm mptcp: Fix up subflow's memcg when CONFIG_SOCK_CGROUP_DATA=n. 2025-10-15 12:03:44 +02:00
net mptcp: Fix up subflow's memcg when CONFIG_SOCK_CGROUP_DATA=n. 2025-10-15 12:03:44 +02:00
rust rust: cpumask: Mark CpumaskVar as transparent 2025-10-15 12:03:19 +02:00
samples 15 hotfixes. 11 are cc:stable and the remainder address post-6.16 issues 2025-09-17 21:34:26 -07:00
scripts scripts/misc-check: update export checks for EXPORT_SYMBOL_FOR_MODULES() 2025-10-15 12:03:22 +02:00
security lsm: CONFIG_LSM can depend on CONFIG_SECURITY 2025-10-15 12:03:17 +02:00
sound ASoC: qcom: audioreach: fix potential null pointer dereference 2025-10-06 11:20:06 +02:00
tools libbpf: Fix error when st-prefix_ops and ops from differ btf 2025-10-15 12:03:38 +02:00
usr usr/include: openrisc: don't HDRTEST bpf_perf_event.h 2025-05-12 15:03:17 +09:00
virt Merge tag 'kvm-x86-no_assignment-6.17' of https://github.com/kvm-x86/linux into HEAD 2025-07-29 08:36:42 -04:00
.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 scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore MAINTAINERS: remove Alyssa Rosenzweig 2025-09-18 21:17:31 +02:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore gitignore: allow .pylintrc to be tracked 2025-07-02 17:10:04 -06:00
.mailmap 7 hotfixes. 4 are cc:stable and the remainder address post-6.16 issues or 2025-09-28 09:32:00 -07:00
.pylintrc docs: add a .pylintrc file with sys path for docs scripts 2025-04-09 12:10:33 -06:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: retire Boris from TLS maintainers 2025-08-26 17:36:01 -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 i2c-for-6.17-rc8 2025-09-28 13:19:23 -07:00
Makefile Linux 6.17.2 2025-10-12 13:01:58 +02:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

README 

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.