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There are three warnings for mach-sa1100 when building with W=1:
arch/arm/common/sa1111.c:699:1: error: no previous prototype for 'sa1111_configure_smc' [-Werror=missing-prototypes]
699 | sa1111_configure_smc(struct sa1111 *sachip, int sdram, unsigned int drac,
| ^~~~~~~~~~~~~~~~~~~~
arch/arm/mach-sa1100/assabet.c:718:13: error: no previous prototype for 'assabet_init_irq' [-Werror=missing-prototypes]
718 | void __init assabet_init_irq(void)
| ^~~~~~~~~~~~~~~~
arch/arm/mach-sa1100/pm.c:126:12: error: no previous prototype for 'sa11x0_pm_init' [-Werror=missing-prototypes]
126 | int __init sa11x0_pm_init(void)
| ^~~~~~~~~~~~~~
The first two are only used locally and can be 'static', while
the last one needs to include the right header.
Link: https://lore.kernel.org/r/20230516153109.514251-12-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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.