Hi Tetsuhiro, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on next-20200519] [cannot apply to linus/master v5.7-rc7 v5.7-rc6 v5.7-rc5 v5.7-rc7] [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/Tetsuhiro-Kohada/exfat-redefine-PBR-as-boot_sector/20200525-195329 base: fb57b1fabcb28f358901b2df90abd2b48abc1ca8 config: c6x-randconfig-s032-20200529 (attached as .config) compiler: c6x-elf-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-243-gc100a7ab-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=c6x CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <l...@intel.com> sparse warnings: (new ones prefixed by >>) >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 >> fs/exfat/super.c:485:29: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 fs/exfat/super.c:504:21: sparse: sparse: cast to restricted __le32 vim +485 fs/exfat/super.c 469 470 static int exfat_verify_boot_region(struct super_block *sb) 471 { 472 struct buffer_head *bh = NULL; 473 u32 chksum = 0, *p_sig, *p_chksum; 474 int sn, i; 475 476 /* read boot sector sub-regions */ 477 for (sn = 0; sn < 11; sn++) { 478 bh = sb_bread(sb, sn); 479 if (!bh) 480 return -EIO; 481 482 if (sn != 0 && sn <= 8) { 483 /* extended boot sector sub-regions */ 484 p_sig = (u32 *)&bh->b_data[sb->s_blocksize - 4]; > 485 if (le32_to_cpu(*p_sig) != EXBOOT_SIGNATURE) { 486 exfat_err(sb, "no exboot-signature"); 487 brelse(bh); 488 return -EINVAL; 489 } 490 } 491 492 chksum = exfat_calc_chksum32(bh->b_data, sb->s_blocksize, 493 chksum, sn ? CS_DEFAULT : CS_BOOT_SECTOR); 494 brelse(bh); 495 } 496 497 /* boot checksum sub-regions */ 498 bh = sb_bread(sb, sn); 499 if (!bh) 500 return -EIO; 501 502 for (i = 0; i < sb->s_blocksize; i += sizeof(u32)) { 503 p_chksum = (u32 *)&bh->b_data[i]; 504 if (le32_to_cpu(*p_chksum) != chksum) { 505 exfat_err(sb, "mismatch checksum"); 506 brelse(bh); 507 return -EINVAL; 508 } 509 } 510 brelse(bh); 511 return 0; 512 } 513 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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