cifs_toupper
wchar_t cifs_toupper(wchar_t in);
c = cifs_toupper(c);
if (cifs_toupper(c1) != cifs_toupper(c2))
hash = partial_name_hash(cifs_toupper(c), hash);
if (cifs_toupper(c1) != cifs_toupper(c2))
wchar_t cifs_toupper(wchar_t in); /* quiet sparse */