[freescale-fslc:6.1-2.2.x-imx 15894/18115] drivers/mfd/maxim_serdes.c:63:5: warning: no previous prototype for 'maxim_serdes_chain_register_remote'

[freescale-fslc:6.1-2.2.x-imx 15894/18115] drivers/mfd/maxim_serdes.c:63:5: warning: no previous prototype for 'maxim_serdes_chain_register_remote'

[kernel test robot]

tree:   https://github.com/Freescale/linux-fslc 6.1-2.2.x-imx
head:   de69f223c019fed2a465c014575b3b3d22b4c3fd
commit: 4679c4f90240fab234b9faa70db8ed791ef6e570 [15894/18115] LF-10269-5: mfd: add Maxim SerDes link manager layer
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240418/202404182358.z0QHNyfH-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240418/202404182358.z0QHNyfH-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/202404182358.z0QHNyfH-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/mfd/maxim_serdes.c:63:5: warning: no previous prototype for 'maxim_serdes_chain_register_remote' [-Wmissing-prototypes]
      63 | int maxim_serdes_chain_register_remote(struct device *dev, int link, void (*cb)(void *), void *data)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/mfd/maxim_serdes.c:109:5: warning: no previous prototype for 'maxim_serdes_chain_register_local' [-Wmissing-prototypes]
     109 | int maxim_serdes_chain_register_local(struct device *dev, int remote_links_used,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
>> drivers/mfd/max96752-core.c:146:5: warning: no previous prototype for 'max96752_set_link_params' [-Wmissing-prototypes]
     146 | int max96752_set_link_params(struct max96752 *max96752)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/maxim_serdes_chain_register_remote +63 drivers/mfd/maxim_serdes.c

    62	
  > 63	int maxim_serdes_chain_register_remote(struct device *dev, int link, void (*cb)(void *), void *data)
    64	{
    65		struct maxim_serdes_chain *serdes_chain;
    66		struct device_node *dn;
    67		int i;
    68	
    69		dn = of_node_get(dev->of_node);
    70	
    71		while (dn) {
    72			serdes_chain = maxim_serdes_get_chain(dn);
    73			if (serdes_chain) {
    74				of_node_put(dn);
    75				break;
    76			}
    77	
    78			dn = of_get_next_parent(dn);
    79		}
    80	
    81		if (!dn) {
    82			dev_err(dev, "could not find the local device of_node in the chains list\n");
    83			return -ENODEV;
    84		}
    85	
    86		if (link > serdes_chain->remotes_no - 1) {
    87			dev_err(dev, "invalid remote link id provided\n");
    88			return -EINVAL;
    89		}
    90	
    91		serdes_chain->remote_late_setup[link].cb = cb;
    92		serdes_chain->remote_late_setup[link].data = data;
    93	
    94		/* let's find out if all remotes registered their late setup routines */
    95		for (i = 0; i < serdes_chain->remotes_no; i++) {
    96			if (!serdes_chain->remote_late_setup[i].cb)
    97				return 0;
    98		}
    99	
   100		/* we're good to go, let's queue the late setup work */
   101		INIT_WORK(&serdes_chain->late_setup_work, maxim_serdes_worker);
   102	
   103		queue_work(system_unbound_wq, &serdes_chain->late_setup_work);
   104	
   105		return 0;
   106	};
   107	EXPORT_SYMBOL(maxim_serdes_chain_register_remote);
   108	
 > 109	int maxim_serdes_chain_register_local(struct device *dev, int remote_links_used,
   110					      void (*cb)(void *), void *data)
   111	{
   112		struct maxim_serdes_chain *chain;
   113		int extra_space;
   114	
   115		extra_space = remote_links_used * sizeof(struct maxim_serdes_late_setup);
   116		chain = devm_kzalloc(dev, sizeof(*chain) + extra_space, GFP_KERNEL);
   117		if (!chain)
   118			return -ENOMEM;
   119	
   120		chain->local_dev_node = dev->of_node;
   121		chain->local_late_setup.cb = cb;
   122		chain->local_late_setup.data = data;
   123		chain->remotes_no = remote_links_used;
   124	
   125		list_add_tail(&chain->entry, &maxim_serdes_chains_list);
   126	
   127		return 0;
   128	}
   129	EXPORT_SYMBOL(maxim_serdes_chain_register_local);
   130	

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