drivers/powercap/dtpm.c:602: warning: Function parameter or member 'dtpm_match_table' not described in 'dtpm_create_hierarchy'

From: kernel test robot
Date: Wed Dec 27 2023 - 05:20:44 EST


Hi Daniel,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: fbafc3e621c3f4ded43720fdb1d6ce1728ec664e
commit: 3759ec678e8944dc2ea70cab77a300408f78ae27 powercap/drivers/dtpm: Add hierarchy creation
date: 1 year, 11 months ago
config: x86_64-randconfig-015-20231009 (https://download.01.org/0day-ci/archive/20231227/202312271839.qpdWcLne-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231227/202312271839.qpdWcLne-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312271839.qpdWcLne-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/powercap/dtpm.c:602: warning: Function parameter or member 'dtpm_match_table' not described in 'dtpm_create_hierarchy'
>> drivers/powercap/dtpm.c:602: warning: Excess function parameter 'hierarchy' description in 'dtpm_create_hierarchy'


vim +602 drivers/powercap/dtpm.c

574
575 /**
576 * dtpm_create_hierarchy - Create the dtpm hierarchy
577 * @hierarchy: An array of struct dtpm_node describing the hierarchy
578 *
579 * The function is called by the platform specific code with the
580 * description of the different node in the hierarchy. It creates the
581 * tree in the sysfs filesystem under the powercap dtpm entry.
582 *
583 * The expected tree has the format:
584 *
585 * struct dtpm_node hierarchy[] = {
586 * [0] { .name = "topmost", type = DTPM_NODE_VIRTUAL },
587 * [1] { .name = "package", .type = DTPM_NODE_VIRTUAL, .parent = &hierarchy[0] },
588 * [2] { .name = "/cpus/cpu0", .type = DTPM_NODE_DT, .parent = &hierarchy[1] },
589 * [3] { .name = "/cpus/cpu1", .type = DTPM_NODE_DT, .parent = &hierarchy[1] },
590 * [4] { .name = "/cpus/cpu2", .type = DTPM_NODE_DT, .parent = &hierarchy[1] },
591 * [5] { .name = "/cpus/cpu3", .type = DTPM_NODE_DT, .parent = &hierarchy[1] },
592 * [6] { }
593 * };
594 *
595 * The last element is always an empty one and marks the end of the
596 * array.
597 *
598 * Return: zero on success, a negative value in case of error. Errors
599 * are reported back from the underlying functions.
600 */
601 int dtpm_create_hierarchy(struct of_device_id *dtpm_match_table)
> 602 {

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https://github.com/intel/lkp-tests/wiki