[jarkko-tpmdd:kprobes 3/3] arch/arm/kernel/module_alloc.c:24:7: warning: no previous prototype for 'module_alloc'

[kernel test robot]

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git kprobes
head:   8a45ec8f64f51131c2e98dcb9ee56edf0ca0a0b3
commit: 8a45ec8f64f51131c2e98dcb9ee56edf0ca0a0b3 [3/3] kprobes: Enable tracing for mololithic kernel images
config: arm-trizeps4_defconfig (https://download.01.org/0day-ci/archive/20220611/202206110736.sXofukqb-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git/commit/?id=8a45ec8f64f51131c2e98dcb9ee56edf0ca0a0b3
        git remote add jarkko-tpmdd git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git
        git fetch --no-tags jarkko-tpmdd kprobes
        git checkout 8a45ec8f64f51131c2e98dcb9ee56edf0ca0a0b3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/arm/kernel/module_alloc.c:24:7: warning: no previous prototype for 'module_alloc' [-Wmissing-prototypes]
      24 | void *module_alloc(unsigned long size)
         |       ^~~~~~~~~~~~


vim +/module_alloc +24 arch/arm/kernel/module_alloc.c

    22	
    23	#ifdef CONFIG_MMU
  > 24	void *module_alloc(unsigned long size)

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