linux-kernel - arch/arm/mach-sa1100/jornada720_ssp.c:24: warning: expecting prototype for arch/arm/mac(). Prototype was for DEFINE

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Message-ID: <202304210535.tWby3jWF-lkp@intel.com>
Date:   Fri, 21 Apr 2023 05:33:58 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: arch/arm/mach-sa1100/jornada720_ssp.c:24: warning: expecting
 prototype for arch/arm/mac(). Prototype was for DEFINE_SPINLOCK() instead

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   cb0856346a60fe3eb837ba5e73588a41f81ac05f
commit: 8faf91c48ca20c714e0dd8cc5f510e3819852912 ARM: sa1100: un-deprecate jornada720
date:   3 months ago
config: arm-jornada720_defconfig (https://download.01.org/0day-ci/archive/20230421/202304210535.tWby3jWF-lkp@intel.com/config)
compiler: arm-linux-gnueabi-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/torvalds/linux.git/commit/?id=8faf91c48ca20c714e0dd8cc5f510e3819852912
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 8faf91c48ca20c714e0dd8cc5f510e3819852912
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304210535.tWby3jWF-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/arm/mach-sa1100/jornada720_ssp.c:24: warning: Function parameter or member 'jornada_ssp_lock' not described in 'DEFINE_SPINLOCK'
>> arch/arm/mach-sa1100/jornada720_ssp.c:24: warning: expecting prototype for arch/arm/mac(). Prototype was for DEFINE_SPINLOCK() instead
   arch/arm/mach-sa1100/jornada720_ssp.c:34: warning: Function parameter or member 'byte' not described in 'jornada_ssp_reverse'
   arch/arm/mach-sa1100/jornada720_ssp.c:57: warning: Function parameter or member 'byte' not described in 'jornada_ssp_byte'
   arch/arm/mach-sa1100/jornada720_ssp.c:85: warning: Function parameter or member 'byte' not described in 'jornada_ssp_inout'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SA1100_SSP
   Depends on [n]: ARCH_SA1100 [=y] && UNUSED_BOARD_FILES [=n]
   Selected by [y]:
   - SA1100_JORNADA720_SSP [=y] && ARCH_SA1100 [=y] && SA1100_JORNADA720 [=y]


vim +24 arch/arm/mach-sa1100/jornada720_ssp.c

69ebb22277a53f Kristoffer Ericson 2007-07-20  23  
69ebb22277a53f Kristoffer Ericson 2007-07-20 @24  static DEFINE_SPINLOCK(jornada_ssp_lock);
69ebb22277a53f Kristoffer Ericson 2007-07-20  25  static unsigned long jornada_ssp_flags;
69ebb22277a53f Kristoffer Ericson 2007-07-20  26  

:::::: The code at line 24 was first introduced by commit
:::::: 69ebb22277a53f612ccd632ceb73ed87c9093412 [ARM] 4506/1: HP Jornada 7XX: Addition of SSP Platform Driver

:::::: TO: Kristoffer Ericson <Kristoffer_e1@...mail.com>
:::::: CC: Russell King <rmk+kernel@....linux.org.uk>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests