[kbuild-all] [linux-next:master 7073/7824] fs/exfat/nls.c:522:27: sparse: sparse: incorrect type in assignment (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: be978f8feb1d4678b941a3ccf181eea1039110e2 commit: 4a08c5ce7fc2bddf10b7701be167b0fb00845f19 [7073/7824] exfat: fix name_hash computation on big endian systems config: x86_64-randconfig-s022-20200713 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-37-gc9676a3b-dirty git checkout 4a08c5ce7fc2bddf10b7701be167b0fb00845f19 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) fs/exfat/nls.c:614:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short @@ got restricted __le16 [usertype] @@ fs/exfat/nls.c:614:32: sparse: expected unsigned short fs/exfat/nls.c:614:32: sparse: got restricted __le16 [usertype] vim +522 fs/exfat/nls.c 492 493 static int exfat_utf8_to_utf16(struct super_block *sb, 494 const unsigned char *p_cstring, const int len, 495 struct exfat_uni_name *p_uniname, int *p_lossy) 496 { 497 int i, unilen, lossy = NLS_NAME_NO_LOSSY; 498 unsigned short upname[MAX_NAME_LENGTH + 1]; 499 unsigned short *uniname = p_uniname->name; 500 501 WARN_ON(!len); 502 503 unilen = utf8s_to_utf16s(p_cstring, len, UTF16_HOST_ENDIAN, 504 (wchar_t *)uniname, MAX_NAME_LENGTH + 2); 505 if (unilen < 0) { 506 exfat_err(sb, "failed to %s (err : %d) nls len : %d", 507 __func__, unilen, len); 508 return unilen; 509 } 510 511 if (unilen > MAX_NAME_LENGTH) { 512 exfat_err(sb, "failed to %s (estr:ENAMETOOLONG) nls len : %d, unilen : %d > %d", 513 __func__, len, unilen, MAX_NAME_LENGTH); 514 return -ENAMETOOLONG; 515 } 516 517 for (i = 0; i < unilen; i++) { 518 if (*uniname < 0x0020 || 519 exfat_wstrchr(bad_uni_chars, *uniname)) 520 lossy |= NLS_NAME_LOSSY; 521 523 uniname++; 524 } 525 526 *uniname = '\0'; 527 p_uniname->name_len = unilen; 528 p_uniname->name_hash = exfat_calc_chksum16(upname, unilen << 1, 0, 529 CS_DEFAULT); 530 531 if (p_lossy) 532 *p_lossy = lossy; 533 return unilen; 534 } 535 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org