linux-kernel - arch/arm64/kernel/syscall.c:164:6: warning: no previous prototype for 'do_el0_svc

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Date:   Thu, 14 Jan 2021 10:41:59 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Will Deacon <will@...nel.org>,
        Anshuman Khandual <anshuman.khandual@....com>
Subject: arch/arm64/kernel/syscall.c:164:6: warning: no previous prototype
 for 'do_el0_svc_compat'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   65f0d2414b7079556fbbcc070b3d1c9f9587606d
commit: 7a2c094464e39a54f5b9228cd78208cd43872bbd arm64: entry: cleanup el0 svc handler naming
date:   12 months ago
config: arm64-randconfig-r005-20210113 (attached as .config)
compiler: aarch64-linux-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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7a2c094464e39a54f5b9228cd78208cd43872bbd
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 7a2c094464e39a54f5b9228cd78208cd43872bbd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>):

   arch/arm64/kernel/syscall.c:157:6: warning: no previous prototype for 'do_el0_svc' [-Wmissing-prototypes]
     157 | void do_el0_svc(struct pt_regs *regs)
         |      ^~~~~~~~~~
>> arch/arm64/kernel/syscall.c:164:6: warning: no previous prototype for 'do_el0_svc_compat' [-Wmissing-prototypes]
     164 | void do_el0_svc_compat(struct pt_regs *regs)
         |      ^~~~~~~~~~~~~~~~~


vim +/do_el0_svc_compat +164 arch/arm64/kernel/syscall.c

   162	
   163	#ifdef CONFIG_COMPAT
 > 164	void do_el0_svc_compat(struct pt_regs *regs)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (32507 bytes)