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When building with clang 18 I see the following warning: | drivers/soc/renesas/rmobile-sysc.c:193:22: warning: cast to smaller integer | type 'enum pd_types' from 'const void *' [-Wvoid-pointer-to-enum-cast] | 193 | add_special_pd(np, (enum pd_types)id->data); This is due to the fact that `id->data` is a void* and `enum pd_types` has the size of an integer. This cast from pointer-width to int-width causes truncation and possible data loss. Instead, cast to `uintptr_t` which has the same width as void*. Reported-by: Nathan Chancellor <nathan@kernel.org> Closes: https://github.com/ClangBuiltLinux/linux/issues/1910 Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230814-void-drivers-soc-renesas-rmobile-sysc-v1-1-6648dfd854de@google.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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.