linux-kernel - arch/powerpc/kernel/rtas-proc.c:771: warning: Function parameter or member 'm' not described in 'ppc_rtas_rmo_buf

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Date:   Thu, 28 Sep 2023 23:05:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nathan Lynch <nathanl@...ux.ibm.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Alexey Kardashevskiy <aik@...abs.ru>,
        Andrew Donnellan <ajd@...ux.ibm.com>
Subject: arch/powerpc/kernel/rtas-proc.c:771: warning: Function parameter or
 member 'm' not described in 'ppc_rtas_rmo_buf_show'

Hi Nathan,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   633b47cb009d09dc8f4ba9cdb3a0ca138809c7c7
commit: c13ff6f3251318f5e1ff5b1a6d05f76996db672a powerpc/rtas: improve ppc_rtas_rmo_buf_show documentation
date:   2 years, 5 months ago
config: powerpc-mgcoge_defconfig (https://download.01.org/0day-ci/archive/20230928/202309282350.RxbSbVM5-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230928/202309282350.RxbSbVM5-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309282350.RxbSbVM5-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/powerpc/kernel/rtas-proc.c:771: warning: Function parameter or member 'm' not described in 'ppc_rtas_rmo_buf_show'
>> arch/powerpc/kernel/rtas-proc.c:771: warning: Function parameter or member 'v' not described in 'ppc_rtas_rmo_buf_show'


vim +771 arch/powerpc/kernel/rtas-proc.c

^1da177e4c3f41 arch/ppc64/kernel/rtas-proc.c   Linus Torvalds 2005-04-16  759  
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  760  /**
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  761   * ppc_rtas_rmo_buf_show() - Describe RTAS-addressable region for user space.
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  762   *
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  763   * Base + size description of a range of RTAS-addressable memory set
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  764   * aside for user space to use as work area(s) for certain RTAS
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  765   * functions. User space accesses this region via /dev/mem. Apart from
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  766   * security policies, the kernel does not arbitrate or serialize
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  767   * access to this region, and user space must ensure that concurrent
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  768   * users do not interfere with each other.
c13ff6f3251318 arch/powerpc/kernel/rtas-proc.c Nathan Lynch   2021-04-08  769   */
^1da177e4c3f41 arch/ppc64/kernel/rtas-proc.c   Linus Torvalds 2005-04-16  770  static int ppc_rtas_rmo_buf_show(struct seq_file *m, void *v)
^1da177e4c3f41 arch/ppc64/kernel/rtas-proc.c   Linus Torvalds 2005-04-16 @771  {

:::::: The code at line 771 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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