Hi Jude,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
head:   3e98e33d345e981800e03dd29f6f6343286d30b6
commit: 734d5ce02cb069cccedc993d8f1dc0ea41cfa3dd [8185/9999] drm/amd/display: Support for DMUB HPD interrupt handling
config: s390-allyesconfig
compiler: s390-linux-gcc (GCC) 12.1.0
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/stable/linux-stable-rc.git/commit/?id=734d5ce02cb069cccedc993d8f1dc0ea41cfa3dd
        git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
        git fetch --no-tags linux-stable-rc linux-5.15.y
        git checkout 734d5ce02cb069cccedc993d8f1dc0ea41cfa3dd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ drivers/gpu/drm/amd/display/amdgpu_dm/

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

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:633: warning: expecting prototype for dmub_aux_setconfig_reply_callback(). Prototype was for dmub_aux_setconfig_callback() instead


vim +633 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c

   622	
   623	/**
   624	 * dmub_aux_setconfig_reply_callback - Callback for AUX or SET_CONFIG command.
   625	 * @adev: amdgpu_device pointer
   626	 * @notify: dmub notification structure
   627	 *
   628	 * Dmub AUX or SET_CONFIG command completion processing callback
   629	 * Copies dmub notification to DM which is to be read by AUX command.
   630	 * issuing thread and also signals the event to wake up the thread.
   631	 */
   632	void dmub_aux_setconfig_callback(struct amdgpu_device *adev, struct dmub_notification *notify)
 > 633	{
   634		if (adev->dm.dmub_notify)
   635			memcpy(adev->dm.dmub_notify, notify, sizeof(struct dmub_notification));
   636		if (notify->type == DMUB_NOTIFICATION_AUX_REPLY)
   637			complete(&adev->dm.dmub_aux_transfer_done);
   638	}
   639	

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