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A mirror of the official Linux kernel repository just in case
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These two functions have stub implementations that are called when NEW_LEDS and/or LEDS_CLASS are disabled, theorerically allowing drivers to optionally use the LED subsystem. However, this has never really worked because a built-in driver is unable to link against these functions if the LED class is in a loadable module. Heiner ran into this problem with a driver that newly gained a LEDS_CLASS dependency and suggested using an IS_REACHABLE() check. This is the reverse approach, removing the stub entirely to acknowledge that it is pointless in its current form, and that not having it avoids misleading developers into thinking that they can rely on it. This survived around 1000 randconfig builds to validate that any callers of the interface already have the correct Kconfig dependency already, with the exception of the one that Heiner just added. Cc: Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/linux-leds/0f6f432b-c650-4bb8-a1b5-fe3372804d52@gmail.com/T/#u Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20240109090715.982332-1-arnd@kernel.org Signed-off-by: Lee Jones <lee@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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 Restructured Text 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.