linux-kernel - [device-mapper-dm:dm-5.19 132/132] drivers/md/dm.c:1542:4: error: use of undeclared identifier 'result'

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Date:   Thu, 24 Mar 2022 06:37:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Mike Snitzer <snitzer@...nel.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org, dm-devel@...hat.com,
        linux-kernel@...r.kernel.org
Subject: [device-mapper-dm:dm-5.19 132/132] drivers/md/dm.c:1542:4: error:
 use of undeclared identifier 'result'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git dm-5.19
head:   7f8ac95a6464b895e3d2b6175f7ee64a4c10fcfe
commit: 7f8ac95a6464b895e3d2b6175f7ee64a4c10fcfe [132/132] dm: push error handling down to __split_and_process_bio
config: x86_64-randconfig-a012 (https://download.01.org/0day-ci/archive/20220324/202203240618.diX27ri2-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 902f4708fe1d03b0de7e5315ef875006a6adc319)
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/device-mapper/linux-dm.git/commit/?id=7f8ac95a6464b895e3d2b6175f7ee64a4c10fcfe
        git remote add device-mapper-dm https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git
        git fetch --no-tags device-mapper-dm dm-5.19
        git checkout 7f8ac95a6464b895e3d2b6175f7ee64a4c10fcfe
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/md/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> drivers/md/dm.c:1542:4: error: use of undeclared identifier 'result'
                   *result = BLK_STS_NOTSUPP;
                    ^
   drivers/md/dm.c:1545:4: error: use of undeclared identifier 'result'
                   *result = BLK_STS_OK;
                    ^
   2 errors generated.


vim +/result +1542 drivers/md/dm.c

  1508	
  1509	static bool __process_abnormal_io(struct clone_info *ci, struct dm_target *ti,
  1510					  blk_status_t *status)
  1511	{
  1512		unsigned num_bios;
  1513	
  1514		if (!is_abnormal_io(ci->bio))
  1515			return false;
  1516	
  1517		num_bios = 0;
  1518		switch (bio_op(ci->bio)) {
  1519		case REQ_OP_DISCARD:
  1520			num_bios = ti->num_discard_bios;
  1521			break;
  1522		case REQ_OP_SECURE_ERASE:
  1523			num_bios = ti->num_secure_erase_bios;
  1524			break;
  1525		case REQ_OP_WRITE_SAME:
  1526			num_bios = ti->num_write_same_bios;
  1527			break;
  1528		case REQ_OP_WRITE_ZEROES:
  1529			num_bios = ti->num_write_zeroes_bios;
  1530			break;
  1531		default:
  1532			return false;
  1533		}
  1534	
  1535		/*
  1536		 * Even though the device advertised support for this type of
  1537		 * request, that does not mean every target supports it, and
  1538		 * reconfiguration might also have changed that since the
  1539		 * check was performed.
  1540		 */
  1541		if (!num_bios)
> 1542			*result = BLK_STS_NOTSUPP;
  1543		else {
  1544			__send_changing_extent_only(ci, ti, num_bios);
  1545			*result = BLK_STS_OK;
  1546		}
  1547		return true;
  1548	}
  1549	

-- 
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https://01.org/lkp