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Anton Khirnov 2606e7e090 platform/x86: asus-wmi: use brightness_set_blocking() for kbd led [ Upstream commit `ccb61a3283` ] kbd_led_set() can sleep, and so may not be used as the brightness_set() callback. Otherwise using this led with a trigger leads to system hangs accompanied by: BUG: scheduling while atomic: acpi_fakekeyd/2588/0x00000003 CPU: 4 UID: 0 PID: 2588 Comm: acpi_fakekeyd Not tainted 6.17.9+deb14-amd64 #1 PREEMPT(lazy) Debian 6.17.9-1 Hardware name: ASUSTeK COMPUTER INC. ASUS EXPERTBOOK B9403CVAR/B9403CVAR, BIOS B9403CVAR.311 12/24/2024 Call Trace: <TASK> [...] schedule_timeout+0xbd/0x100 __down_common+0x175/0x290 down_timeout+0x67/0x70 acpi_os_wait_semaphore+0x57/0x90 [...] asus_wmi_evaluate_method3+0x87/0x190 [asus_wmi] led_trigger_event+0x3f/0x60 [...] Fixes: `9fe44fc98c` ("platform/x86: asus-wmi: Simplify the keyboard brightness updating process") Signed-off-by: Anton Khirnov <anton@khirnov.net> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Denis Benato <benato.denis96@gmail.com> Link: https://patch.msgid.link/20251129101307.18085-3-anton@khirnov.net Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2025-12-18 14:03:35 +01:00
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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.