tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   98546348153dee5f8ced572fd6c4690461d20f51
commit: 35fa30bfdfc6bb5f78c35df740baa70f9b7178ab [3851/3917] Merge remote-tracking branch 'amdgpu/drm-next'
config: x86_64-randconfig-r012-20210311 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 574a9dabc63ba1e7a04c08d4bde2eacd61b44ce1)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=35fa30bfdfc6bb5f78c35df740baa70f9b7178ab
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 35fa30bfdfc6bb5f78c35df740baa70f9b7178ab
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All warnings (new ones prefixed by >>):

quoted

drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c:99: warning: expecting prototype for smuio_v13_0_supports_host_gpu_xgmi(). Prototype was for smuio_v13_0_is_host_gpu_xgmi_supported() instead

vim +99 drivers/gpu/drm/amd/amdgpu/smuio_v13_0.c

62f6a0a7d844be Hawking Zhang 2020-10-23   90  
62f6a0a7d844be Hawking Zhang 2020-10-23   91  /**
62f6a0a7d844be Hawking Zhang 2020-10-23   92   * smuio_v13_0_supports_host_gpu_xgmi - detect xgmi interface between cpu and gpu/s.
62f6a0a7d844be Hawking Zhang 2020-10-23   93   *
62f6a0a7d844be Hawking Zhang 2020-10-23   94   * @adev: amdgpu device pointer
62f6a0a7d844be Hawking Zhang 2020-10-23   95   *
62f6a0a7d844be Hawking Zhang 2020-10-23   96   * Returns true on success or false otherwise.
62f6a0a7d844be Hawking Zhang 2020-10-23   97   */
62f6a0a7d844be Hawking Zhang 2020-10-23   98  static bool smuio_v13_0_is_host_gpu_xgmi_supported(struct amdgpu_device *adev)
62f6a0a7d844be Hawking Zhang 2020-10-23  @99  {
62f6a0a7d844be Hawking Zhang 2020-10-23  100  	u32 data;
62f6a0a7d844be Hawking Zhang 2020-10-23  101  
62f6a0a7d844be Hawking Zhang 2020-10-23  102  	data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
62f6a0a7d844be Hawking Zhang 2020-10-23  103  	data = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, TOPOLOGY_ID);
62f6a0a7d844be Hawking Zhang 2020-10-23  104  	/* data[4:0]
62f6a0a7d844be Hawking Zhang 2020-10-23  105  	 * bit 0 == 0 host-gpu interface is PCIE
62f6a0a7d844be Hawking Zhang 2020-10-23  106  	 * bit 0 == 1 host-gpu interface is Alternate Protocal
62f6a0a7d844be Hawking Zhang 2020-10-23  107  	 * for AMD, this is XGMI
62f6a0a7d844be Hawking Zhang 2020-10-23  108  	 */
62f6a0a7d844be Hawking Zhang 2020-10-23  109  	data &= SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK;
62f6a0a7d844be Hawking Zhang 2020-10-23  110  
62f6a0a7d844be Hawking Zhang 2020-10-23  111  	return data ? true : false;
62f6a0a7d844be Hawking Zhang 2020-10-23  112  }
62f6a0a7d844be Hawking Zhang 2020-10-23  113  

:::::: The code at line 99 was first introduced by commit
:::::: 62f6a0a7d844be7ccc8bbd85bb8decac3145f59a drm/amdgpu: implement smuio v13_0 callbacks

:::::: TO: Hawking Zhang [off-list ref]
:::::: CC: Alex Deucher [off-list ref]

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