linux-kernel - [ardb:efi-zboot-direct 7/35] drivers/firmware/efi/memmap.c:16:13: warning: no previous prototype for '__efi_memmap

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Date:   Thu, 13 Oct 2022 21:49:00 +0800
From:   kernel test robot <lkp@...el.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [ardb:efi-zboot-direct 7/35] drivers/firmware/efi/memmap.c:16:13:
 warning: no previous prototype for '__efi_memmap_free'

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git efi-zboot-direct
head:   c4954c4853a50dbfefd1beb56d466ab612164ae2
commit: 79950822a283bfcfe394813e805ad0e382535274 [7/35] efi: memmap: Move manipulation routines into x86 arch tree
config: ia64-allyesconfig
compiler: ia64-linux-gcc (GCC) 12.1.0
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/ardb/linux.git/commit/?id=79950822a283bfcfe394813e805ad0e382535274
        git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
        git fetch --no-tags ardb efi-zboot-direct
        git checkout 79950822a283bfcfe394813e805ad0e382535274
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/firmware/efi/

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

All warnings (new ones prefixed by >>):

>> drivers/firmware/efi/memmap.c:16:13: warning: no previous prototype for '__efi_memmap_free' [-Wmissing-prototypes]
      16 | void __weak __efi_memmap_free(u64 phys, unsigned long size, unsigned long flags)
         |             ^~~~~~~~~~~~~~~~~
   {standard input}: Assembler messages:
   {standard input}:622: Error: Register number out of range 0..3
   {standard input}:623: Error: Register number out of range 0..3
   {standard input}:623: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 36
   {standard input}:622: Warning: This is the location of the conflicting usage
   {standard input}:624: Error: Register number out of range 0..3
   {standard input}:624: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 36
   {standard input}:622: Warning: This is the location of the conflicting usage
   {standard input}:624: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 36
   {standard input}:623: Warning: This is the location of the conflicting usage
   {standard input}:628: Error: Register number out of range 0..3
   {standard input}:781: Error: Register number out of range 0..3
   {standard input}:782: Error: Register number out of range 0..3
   {standard input}:782: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 38
   {standard input}:781: Warning: This is the location of the conflicting usage
   {standard input}:783: Error: Register number out of range 0..3
   {standard input}:783: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 38
   {standard input}:781: Warning: This is the location of the conflicting usage
   {standard input}:783: Warning: Use of 'mov' violates WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 38
   {standard input}:782: Warning: This is the location of the conflicting usage
   {standard input}:787: Error: Register number out of range 0..3


vim +/__efi_memmap_free +16 drivers/firmware/efi/memmap.c

    15	
  > 16	void __weak __efi_memmap_free(u64 phys, unsigned long size, unsigned long flags)
    17	{
    18	}
    19	

-- 
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