[arm:for-next 9/26] arch/arm/boot/compressed/fdt_check_mem_start.c:62:10: warning: no previous prototype for 'fdt_check_mem_start'

[Geert Uytterhoeven]

On Tue, Feb 2, 2021 at 11:31 PM kernel test robot <lkp at intel.com> wrote:
> tree:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
> head:   d6bae7564ab1254b46ee3a3953ce1eb682a09602
> commit: 0673cb38951215060d7993b43ad3c45cd413c2c3 [9/26] ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
> config: arm-randconfig-r035-20210202 (attached as .config)
> compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         git remote add arm git://git.armlinux.org.uk/~rmk/linux-arm.git
>         git fetch --no-tags arm for-next
>         git checkout 0673cb38951215060d7993b43ad3c45cd413c2c3
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp at intel.com>
>
> All warnings (new ones prefixed by >>):
>
> >> arch/arm/boot/compressed/fdt_check_mem_start.c:62:10: warning: no previous prototype for 'fdt_check_mem_start' [-Wmissing-prototypes]
>       62 | uint32_t fdt_check_mem_start(uint32_t mem_start, const void *fdt)
>          |          ^~~~~~~~~~~~~~~~~~~

Most global C functions in arch/arm/boot/compressed/ do not have previous
prototypes, as they are called from assembler only.  The only exception is
arch/arm/boot/compressed/misc.h.

Russell: do you want to have prototypes for all of them?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds