Hi Sasha, I love your patch! Yet something to improve: [auto build test ERROR on v5.7] [cannot apply to wireless-drivers-next/master wireless-drivers/master bpf-next/master bpf/master linus/master next-20200608] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Sasha-Levin/drm-amdgpu-fix-and-c... base: 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 config: powerpc-defconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): arch/powerpc/platforms/cell/spufs/file.c: In function '__spufs_wbox_info_read': 2066 | u32 wbox_stat; | ^~~~~~~~~ cc1: all warnings being treated as errors vim +/wbox_stat +2066 arch/powerpc/platforms/cell/spufs/file.c 6b21b82a42d58a Jeremy Kerr 2020-06-08 2060 bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2061 static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2062 char __user *buf, size_t len, loff_t *pos) 69a2f00ce5d3a1 Dwayne Grant McConnell 2006-11-20 2063 { 69a2f00ce5d3a1 Dwayne Grant McConnell 2006-11-20 2064 int i, cnt; 69a2f00ce5d3a1 Dwayne Grant McConnell 2006-11-20 2065 u32 data[4]; 69a2f00ce5d3a1 Dwayne Grant McConnell 2006-11-20 @2066 u32 wbox_stat; 69a2f00ce5d3a1 Dwayne Grant McConnell 2006-11-20 2067 bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2068 wbox_stat = ctx->csa.prob.mb_stat_R; 6b21b82a42d58a Jeremy Kerr 2020-06-08 2069 cnt = spufs_wbox_info_cnt(ctx); bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2070 for (i = 0; i < cnt; i++) { bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2071 data[i] = ctx->csa.spu_mailbox_data[i]; bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2072 } bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2073 bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2074 return simple_read_from_buffer(buf, len, pos, &data, bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2075 cnt * sizeof(u32)); bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2076 } bf1ab978be2318 Dwayne Grant McConnell 2006-11-23 2077 :::::: The code at line 2066 was first introduced by commit :::::: 69a2f00ce5d3a19a70b36f08eaf9049677277710 [POWERPC] spufs: Implement /mbox_info, /ibox_info, and /wbox_info. :::::: TO: Dwayne Grant McConnell <decimal(a)us.ibm.com&gt; :::::: CC: Paul Mackerras <paulus(a)samba.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org