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5b89c6f9b2
Since commit80b6093b55("kbuild: add -Wundef to KBUILD_CPPFLAGS for W=1 builds"), building with W=1 detects misuse of #if. $ make W=1 ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- arch/riscv/kernel/ [snip] AS arch/riscv/kernel/head.o arch/riscv/kernel/head.S:329:5: warning: "CONFIG_RISCV_BOOT_SPINWAIT" is not defined, evaluates to 0 [-Wundef] 329 | #if CONFIG_RISCV_BOOT_SPINWAIT | ^~~~~~~~~~~~~~~~~~~~~~~~~~ CONFIG_RISCV_BOOT_SPINWAIT is a bool option. #ifdef should be used. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Fixes:2ffc48fc70("RISC-V: Move spinwait booting method to its own config") Link: https://lore.kernel.org/r/20230106161213.2374093-1-masahiroy@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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.