linux-kernel - drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:110: warning: expecting prototype for intel_guc_hwconfig_init(). Prototype was for guc_hwconfig

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Date:   Thu, 4 Aug 2022 01:48:10 +0800
From:   kernel test robot <lkp@...el.com>
To:     John Harrison <John.C.Harrison@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Matthew Brost <matthew.brost@...el.com>,
        Jordan Justen <jordan.l.justen@...el.com>,
        Michal Wajdeczko <michal.wajdeczko@...el.com>
Subject: drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:110: warning:
 expecting prototype for intel_guc_hwconfig_init(). Prototype was for
 guc_hwconfig_init() instead

Hi John,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e2b542100719a93f8cdf6d90185410d38a57a4c1
commit: 8781f0515247f441623a01f6e036a1d7898170e2 drm/i915/guc: Add fetch of hwconfig blob
date:   5 months ago
config: i386-randconfig-a004 (https://download.01.org/0day-ci/archive/20220804/202208040157.aQqPWbKV-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 495519e5f8232d144ed26e9c18dbcbac6a5f25eb)
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=8781f0515247f441623a01f6e036a1d7898170e2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 8781f0515247f441623a01f6e036a1d7898170e2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/

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

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:110: warning: Function parameter or member 'gt' not described in 'guc_hwconfig_init'
>> drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:110: warning: expecting prototype for intel_guc_hwconfig_init(). Prototype was for guc_hwconfig_init() instead
   drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:143: warning: Function parameter or member 'gt' not described in 'intel_gt_init_hwconfig'
   drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c:156: warning: Function parameter or member 'gt' not described in 'intel_gt_fini_hwconfig'


vim +110 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c

   102	
   103	/**
   104	 * intel_guc_hwconfig_init - Initialize the HWConfig
   105	 *
   106	 * Retrieve the HWConfig table from the GuC and save it locally.
   107	 * It can then be queried on demand by other users later on.
   108	 */
   109	static int guc_hwconfig_init(struct intel_gt *gt)
 > 110	{
   111		struct intel_hwconfig *hwconfig = &gt->info.hwconfig;
   112		struct intel_guc *guc = &gt->uc.guc;
   113		int ret;
   114	
   115		if (!has_table(gt->i915))
   116			return 0;
   117	
   118		ret = guc_hwconfig_discover_size(guc, hwconfig);
   119		if (ret)
   120			return ret;
   121	
   122		hwconfig->ptr = kmalloc(hwconfig->size, GFP_KERNEL);
   123		if (!hwconfig->ptr) {
   124			hwconfig->size = 0;
   125			return -ENOMEM;
   126		}
   127	
   128		ret = guc_hwconfig_fill_buffer(guc, hwconfig);
   129		if (ret < 0) {
   130			intel_gt_fini_hwconfig(gt);
   131			return ret;
   132		}
   133	
   134		return 0;
   135	}
   136	

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