linux-kernel - drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hubp.c:1319:6: warning: no previous prototype for 'hubp1_wait_pipe_read

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Message-ID: <202203260538.PgS6ucUM-lkp@intel.com>
Date:   Sat, 26 Mar 2022 05:12:45 +0800
From:   kernel test robot <lkp@...el.com>
To:     Becle Lee <becle.lee@....com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Alex Deucher <alexander.deucher@....com>,
        Hersen Wu <hersenxs.wu@....com>, Aric Cyr <Aric.Cyr@....com>
Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hubp.c:1319:6:
 warning: no previous prototype for 'hubp1_wait_pipe_read_start'

Hi Becle,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   aa5b537b0ecc16992577b013f11112d54c7ce869
commit: dd15640bcee5a5fa74fc52557dd6220f48b01116 drm/amd/display: Wait for hubp read line for Pollock
date:   10 days ago
config: powerpc64-randconfig-r015-20220325 (https://download.01.org/0day-ci/archive/20220326/202203260538.PgS6ucUM-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
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=dd15640bcee5a5fa74fc52557dd6220f48b01116
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout dd15640bcee5a5fa74fc52557dd6220f48b01116
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/gpu/drm/

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 >>):

>> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hubp.c:1319:6: warning: no previous prototype for 'hubp1_wait_pipe_read_start' [-Wmissing-prototypes]
    1319 | void hubp1_wait_pipe_read_start(struct hubp *hubp)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/hubp1_wait_pipe_read_start +1319 drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hubp.c

  1313	
  1314	/**
  1315	 * hubp1_wait_pipe_read_start - wait for hubp ret path starting read.
  1316	 *
  1317	 * @hubp: hubp struct reference.
  1318	 */
> 1319	void hubp1_wait_pipe_read_start(struct hubp *hubp)
  1320	{
  1321		struct dcn10_hubp *hubp1 = TO_DCN10_HUBP(hubp);
  1322	
  1323		REG_WAIT(HUBPRET_READ_LINE_STATUS,
  1324			PIPE_READ_VBLANK, 0,
  1325			 1, 1000);
  1326	}
  1327	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp