[tobetter:odroid-6.6.y 42/82] drivers/char/rk3568-gpiomem.c:2: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/tobetter/linux odroid-6.6.y
head:   c970a63609188f53cf758a3dcd395e777150a29a
commit: 905d94c26ec85e35bcc9d727a5c49130603afbb9 [42/82] ODROID-M1: Add /dev/gpiomem device
config: arm64-randconfig-001-20240907 (https://download.01.org/0day-ci/archive/20240908/202409080704.MMudSJIX-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240908/202409080704.MMudSJIX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409080704.MMudSJIX-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/char/rk3568-gpiomem.c:2: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * GPIO memory device driver

dtcheck warnings: (new ones prefixed by >>)
>> arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts:106.17-110.4: Warning (unit_address_vs_reg): /rk3568-gpiomem: node has a reg or ranges property, but no unit name

vim +2 drivers/char/rk3568-gpiomem.c

   > 2	 * GPIO memory device driver
     3	 *
     4	 * Creates a chardev /dev/gpiomem which will provide user access to
     5	 * the rk3568's GPIO registers when it is mmap()'d.
     6	 * No longer need root for user GPIO access, but without relaxing permissions
     7	 * on /dev/mem.
     8	 *
     9	 * Written by Luke Wren <luke@raspberrypi.org>
    10	 * Copyright (c) 2015, Raspberry Pi (Trading) Ltd.
    11	 *
    12	 * Redistribution and use in source and binary forms, with or without
    13	 * modification, are permitted provided that the following conditions
    14	 * are met:
    15	 * 1. Redistributions of source code must retain the above copyright
    16	 *    notice, this list of conditions, and the following disclaimer,
    17	 *    without modification.
    18	 * 2. Redistributions in binary form must reproduce the above copyright
    19	 *    notice, this list of conditions and the following disclaimer in the
    20	 *    documentation and/or other materials provided with the distribution.
    21	 * 3. The names of the above-listed copyright holders may not be used
    22	 *    to endorse or promote products derived from this software without
    23	 *    specific prior written permission.
    24	 *
    25	 * ALTERNATIVELY, this software may be distributed under the terms of the
    26	 * GNU General Public License ("GPL") version 2, as published by the Free
    27	 * Software Foundation.
    28	 *
    29	 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
    30	 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    31	 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    32	 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
    33	 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    34	 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    35	 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    36	 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    37	 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    38	 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    39	 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    40	 */
    41	

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