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Mon, 15 Nov 2021 09:22:45 +0000 Message-ID: <4426183d-27e2-e900-480d-210e649441a1@intel.com> Date: Mon, 15 Nov 2021 17:22:33 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0 Thunderbird/91.3.0 Subject: [driver-core:debugfs_cleanup 1/1] fs/d_path.c:20:20: warning: Unsigned variable '.' can't be negative so it is unnecessary to test it. 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[unsignedPositive] if (likely(p->len >= 0)) ^ vim +20 fs/d_path.c 7a5cf791a74764 Al Viro 2018-03-05 10 ad08ae586586ea Al Viro 2021-05-12 11 struct prepend_buffer { ad08ae586586ea Al Viro 2021-05-12 12 char *buf; 8247270bcf99bc Greg Kroah-Hartman 2021-07-27 13 unsigned int len; ad08ae586586ea Al Viro 2021-05-12 14 }; ad08ae586586ea Al Viro 2021-05-12 15 #define DECLARE_BUFFER(__name, __buf, __len) \ ad08ae586586ea Al Viro 2021-05-12 16 struct prepend_buffer __name = {.buf = __buf + __len, .len = __len} ad08ae586586ea Al Viro 2021-05-12 17 ad08ae586586ea Al Viro 2021-05-12 18 static char *extract_string(struct prepend_buffer *p) 7a5cf791a74764 Al Viro 2018-03-05 19 { ad08ae586586ea Al Viro 2021-05-12 @20 if (likely(p->len >= 0)) ad08ae586586ea Al Viro 2021-05-12 21 return p->buf; ad08ae586586ea Al Viro 2021-05-12 22 return ERR_PTR(-ENAMETOOLONG); ad08ae586586ea Al Viro 2021-05-12 23 } ad08ae586586ea Al Viro 2021-05-12 24 :::::: The code at line 20 was first introduced by commit :::::: ad08ae586586ea9e2c0228a3d5a083500ea54202 d_path: introduce struct prepend_buffer :::::: TO: Al Viro :::::: CC: Al Viro --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org