[kbuild-all] [hare-scsi-devel:ata-trace.v4 16/68] drivers/ata/sata_mv.c:1276:30: warning: 'dw' is used uninitialized

tree: https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git ata-trace.v4 head: 543d0f43ed9c7b04ab463b52f2e59fd406b4bde8 commit: f3e85aba1ba67f2efcc34413ed9546be69229179 [16/68] sata_mv: replace DPRINTK with dynamic debugging config: m68k-randconfig-r006-20211210 (https://download.01.org/0day-ci/archive/20211210/202112102158.vl74bmsi-lk...) compiler: m68k-linux-gcc (GCC) 11.2.0 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/hare/scsi-devel.git/commi... git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git git fetch --no-tags hare-scsi-devel ata-trace.v4 git checkout f3e85aba1ba67f2efcc34413ed9546be69229179 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash drivers/ata/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/ata/sata_mv.c:790:35: warning: 'mv_pci_tbl' defined but not used [-Wunused-const-variable=] 790 | static const struct pci_device_id mv_pci_tbl[] = { | ^~~~~~~~~~ drivers/ata/sata_mv.c: In function 'mv_pci_error': 1276 | o += snprintf(linebuf + o, 38 - o, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1277 | "%08x ", dw); | ~~~~~~~~~~~~ drivers/ata/sata_mv.c:1270:13: note: 'dw' was declared here 1270 | u32 dw; | ^~ vim +/dw +1276 drivers/ata/sata_mv.c 1266 1267 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) 1268 { 1269 int b, w, o; 1270 u32 dw; 1271 unsigned char linebuf[38]; 1272 1273 for (b = 0; b < bytes; ) { 1274 for (w = 0, o = 0; b < bytes && w < 4; w++) { 1275 (void) pci_read_config_dword(pdev, b, &dw); 1277 "%08x ", dw); 1278 b += sizeof(u32); 1279 } 1280 dev_dbg(&pdev->dev, "%s: %02x: %s\n", 1281 __func__, b, linebuf); 1282 } 1283 } 1284 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org