Messages in this thread | | | Date | Fri, 31 Dec 2021 10:17:41 +0800 | From | kernel test robot <> | Subject | [dlemoal-libata:for-5.17-logging 28/79] drivers/ata/sata_mv.c:1276:30: warning: 'dw' is used uninitialized |
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tree: git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata.git for-5.17-logging head: 7830f5151b3b153a04daec48653458c9a2db7b16 commit: 8e1aff057cd5a2d00d19754fabf7095ba54a7e91 [28/79] sata_mv: replace DPRINTK with dynamic debugging config: sparc64-randconfig-r005-20211230 (https://download.01.org/0day-ci/archive/20211231/202112311057.WDs1psTQ-lkp@intel.com/config) compiler: sparc64-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/dlemoal/libata.git/commit/?id=8e1aff057cd5a2d00d19754fabf7095ba54a7e91 git remote add dlemoal-libata git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata.git git fetch --no-tags dlemoal-libata for-5.17-logging git checkout 8e1aff057cd5a2d00d19754fabf7095ba54a7e91 # 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=sparc64 SHELL=/bin/bash drivers/ata/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
drivers/ata/sata_mv.c: In function 'mv_pci_error': >> drivers/ata/sata_mv.c:1276:30: warning: 'dw' is used uninitialized [-Wuninitialized] 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); > 1276 o += snprintf(linebuf + o, 38 - o, 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
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