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* drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:399:5: warning: no previous prototype for function 'amdgpu_vkms_output_init'
@ 2021-11-26  0:16 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-11-26  0:16 UTC (permalink / raw)
  To: Ryan Taylor; +Cc: llvm, kbuild-all, linux-kernel, Alex Deucher

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   8ced7ca3570333998ad2088d5a6275701970e28e
commit: 733ee71ae0d03a8b03711dca8bc94c8ac05a6bc3 drm/amdgpu: replace dce_virtual with amdgpu_vkms (v3)
date:   4 months ago
config: i386-randconfig-a015-20210927 (https://download.01.org/0day-ci/archive/20211126/202111260806.ISy82sTq-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
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=733ee71ae0d03a8b03711dca8bc94c8ac05a6bc3
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 733ee71ae0d03a8b03711dca8bc94c8ac05a6bc3
        # save the config file to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:399:5: warning: no previous prototype for function 'amdgpu_vkms_output_init' [-Wmissing-prototypes]
   int amdgpu_vkms_output_init(struct drm_device *dev,
       ^
   drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c:399:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int amdgpu_vkms_output_init(struct drm_device *dev,
   ^
   static 
   1 warning generated.


vim +/amdgpu_vkms_output_init +399 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c

84ec374bd58036 Ryan Taylor 2021-06-07  398  
84ec374bd58036 Ryan Taylor 2021-06-07 @399  int amdgpu_vkms_output_init(struct drm_device *dev,
84ec374bd58036 Ryan Taylor 2021-06-07  400  			    struct amdgpu_vkms_output *output, int index)
84ec374bd58036 Ryan Taylor 2021-06-07  401  {
84ec374bd58036 Ryan Taylor 2021-06-07  402  	struct drm_connector *connector = &output->connector;
84ec374bd58036 Ryan Taylor 2021-06-07  403  	struct drm_encoder *encoder = &output->encoder;
84ec374bd58036 Ryan Taylor 2021-06-07  404  	struct drm_crtc *crtc = &output->crtc;
84ec374bd58036 Ryan Taylor 2021-06-07  405  	struct drm_plane *primary, *cursor = NULL;
84ec374bd58036 Ryan Taylor 2021-06-07  406  	int ret;
84ec374bd58036 Ryan Taylor 2021-06-07  407  
84ec374bd58036 Ryan Taylor 2021-06-07  408  	primary = amdgpu_vkms_plane_init(dev, DRM_PLANE_TYPE_PRIMARY, index);
84ec374bd58036 Ryan Taylor 2021-06-07  409  	if (IS_ERR(primary))
84ec374bd58036 Ryan Taylor 2021-06-07  410  		return PTR_ERR(primary);
84ec374bd58036 Ryan Taylor 2021-06-07  411  
84ec374bd58036 Ryan Taylor 2021-06-07  412  	ret = amdgpu_vkms_crtc_init(dev, crtc, primary, cursor);
84ec374bd58036 Ryan Taylor 2021-06-07  413  	if (ret)
84ec374bd58036 Ryan Taylor 2021-06-07  414  		goto err_crtc;
84ec374bd58036 Ryan Taylor 2021-06-07  415  
84ec374bd58036 Ryan Taylor 2021-06-07  416  	ret = drm_connector_init(dev, connector, &amdgpu_vkms_connector_funcs,
84ec374bd58036 Ryan Taylor 2021-06-07  417  				 DRM_MODE_CONNECTOR_VIRTUAL);
84ec374bd58036 Ryan Taylor 2021-06-07  418  	if (ret) {
84ec374bd58036 Ryan Taylor 2021-06-07  419  		DRM_ERROR("Failed to init connector\n");
84ec374bd58036 Ryan Taylor 2021-06-07  420  		goto err_connector;
84ec374bd58036 Ryan Taylor 2021-06-07  421  	}
84ec374bd58036 Ryan Taylor 2021-06-07  422  
84ec374bd58036 Ryan Taylor 2021-06-07  423  	drm_connector_helper_add(connector, &amdgpu_vkms_conn_helper_funcs);
84ec374bd58036 Ryan Taylor 2021-06-07  424  
84ec374bd58036 Ryan Taylor 2021-06-07  425  	ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_VIRTUAL);
84ec374bd58036 Ryan Taylor 2021-06-07  426  	if (ret) {
84ec374bd58036 Ryan Taylor 2021-06-07  427  		DRM_ERROR("Failed to init encoder\n");
84ec374bd58036 Ryan Taylor 2021-06-07  428  		goto err_encoder;
84ec374bd58036 Ryan Taylor 2021-06-07  429  	}
84ec374bd58036 Ryan Taylor 2021-06-07  430  	encoder->possible_crtcs = 1 << index;
84ec374bd58036 Ryan Taylor 2021-06-07  431  
84ec374bd58036 Ryan Taylor 2021-06-07  432  	ret = drm_connector_attach_encoder(connector, encoder);
84ec374bd58036 Ryan Taylor 2021-06-07  433  	if (ret) {
84ec374bd58036 Ryan Taylor 2021-06-07  434  		DRM_ERROR("Failed to attach connector to encoder\n");
84ec374bd58036 Ryan Taylor 2021-06-07  435  		goto err_attach;
84ec374bd58036 Ryan Taylor 2021-06-07  436  	}
84ec374bd58036 Ryan Taylor 2021-06-07  437  
84ec374bd58036 Ryan Taylor 2021-06-07  438  	drm_mode_config_reset(dev);
84ec374bd58036 Ryan Taylor 2021-06-07  439  
84ec374bd58036 Ryan Taylor 2021-06-07  440  	return 0;
84ec374bd58036 Ryan Taylor 2021-06-07  441  
84ec374bd58036 Ryan Taylor 2021-06-07  442  err_attach:
84ec374bd58036 Ryan Taylor 2021-06-07  443  	drm_encoder_cleanup(encoder);
84ec374bd58036 Ryan Taylor 2021-06-07  444  
84ec374bd58036 Ryan Taylor 2021-06-07  445  err_encoder:
84ec374bd58036 Ryan Taylor 2021-06-07  446  	drm_connector_cleanup(connector);
84ec374bd58036 Ryan Taylor 2021-06-07  447  
84ec374bd58036 Ryan Taylor 2021-06-07  448  err_connector:
84ec374bd58036 Ryan Taylor 2021-06-07  449  	drm_crtc_cleanup(crtc);
84ec374bd58036 Ryan Taylor 2021-06-07  450  
84ec374bd58036 Ryan Taylor 2021-06-07  451  err_crtc:
84ec374bd58036 Ryan Taylor 2021-06-07  452  	drm_plane_cleanup(primary);
84ec374bd58036 Ryan Taylor 2021-06-07  453  
84ec374bd58036 Ryan Taylor 2021-06-07  454  	return ret;
84ec374bd58036 Ryan Taylor 2021-06-07  455  }
733ee71ae0d03a Ryan Taylor 2021-06-18  456  

:::::: The code at line 399 was first introduced by commit
:::::: 84ec374bd580364a32818c9fc269c19d6e931cab drm/amdgpu: create amdgpu_vkms (v4)

:::::: TO: Ryan Taylor <Ryan.Taylor@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>

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

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