Re: [PATCH v2 3/8] of/irq: Introduce for_each_of_imap_item

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

Hi Herve,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on tip/irq/core linus/master v6.17-rc5 next-20250910]
[cannot apply to geert-renesas-devel/next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Herve-Codina-Schneider-Electric/ARM-dts-r9a06g032-Add-GPIO-controllers/20250909-200642
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20250909120041.154459-4-herve.codina%40bootlin.com
patch subject: [PATCH v2 3/8] of/irq: Introduce for_each_of_imap_item
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20250911/202509110402.OHHgtxRA-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250911/202509110402.OHHgtxRA-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/202509110402.OHHgtxRA-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/base/platform.c:15:
>> include/linux/of_irq.h:123:29: warning: no previous prototype for function 'of_imap_parser_one' [-Wmissing-prototypes]
     123 | extern struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser,
         |                             ^
   include/linux/of_irq.h:123:8: note: declare 'static' if the function is not intended to be used outside of this translation unit
     123 | extern struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser,
         |        ^
   1 warning generated.


vim +/of_imap_parser_one +123 include/linux/of_irq.h

    58	
    59	extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
    60	extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
    61	extern int of_irq_to_resource(struct device_node *dev, int index,
    62				      struct resource *r);
    63	
    64	#ifdef CONFIG_OF_IRQ
    65	extern void of_irq_init(const struct of_device_id *matches);
    66	extern int of_irq_parse_one(struct device_node *device, int index,
    67				  struct of_phandle_args *out_irq);
    68	extern int of_irq_count(struct device_node *dev);
    69	extern int of_irq_get(struct device_node *dev, int index);
    70	extern int of_irq_get_byname(struct device_node *dev, const char *name);
    71	extern int of_irq_to_resource_table(struct device_node *dev,
    72			struct resource *res, int nr_irqs);
    73	extern struct device_node *of_irq_find_parent(struct device_node *child);
    74	extern int of_imap_parser_init(struct of_imap_parser *parser,
    75				       struct device_node *node,
    76				       struct of_imap_item *item);
    77	extern struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser,
    78						       struct of_imap_item *item);
    79	extern struct irq_domain *of_msi_get_domain(struct device *dev,
    80						    const struct device_node *np,
    81						    enum irq_domain_bus_token token);
    82	extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
    83								u32 id,
    84								u32 bus_token);
    85	extern void of_msi_configure(struct device *dev, const struct device_node *np);
    86	extern u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in);
    87	#else
    88	static inline void of_irq_init(const struct of_device_id *matches)
    89	{
    90	}
    91	static inline int of_irq_parse_one(struct device_node *device, int index,
    92					   struct of_phandle_args *out_irq)
    93	{
    94		return -EINVAL;
    95	}
    96	static inline int of_irq_count(struct device_node *dev)
    97	{
    98		return 0;
    99	}
   100	static inline int of_irq_get(struct device_node *dev, int index)
   101	{
   102		return 0;
   103	}
   104	static inline int of_irq_get_byname(struct device_node *dev, const char *name)
   105	{
   106		return 0;
   107	}
   108	static inline int of_irq_to_resource_table(struct device_node *dev,
   109						   struct resource *res, int nr_irqs)
   110	{
   111		return 0;
   112	}
   113	static inline void *of_irq_find_parent(struct device_node *child)
   114	{
   115		return NULL;
   116	}
   117	static inline int of_imap_parser_init(struct of_imap_parser *parser,
   118					      struct device_node *node,
   119					      struct of_imap_item *item)
   120	{
   121		return -ENOSYS;
   122	}
 > 123	extern struct of_imap_item *of_imap_parser_one(struct of_imap_parser *parser,
   124						       struct of_imap_item *item)
   125	{
   126		return NULL;
   127	}
   128	static inline struct irq_domain *of_msi_get_domain(struct device *dev,
   129							   struct device_node *np,
   130							   enum irq_domain_bus_token token)
   131	{
   132		return NULL;
   133	}
   134	static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
   135							u32 id, u32 bus_token)
   136	{
   137		return NULL;
   138	}
   139	static inline void of_msi_configure(struct device *dev, struct device_node *np)
   140	{
   141	}
   142	static inline u32 of_msi_xlate(struct device *dev, struct device_node **msi_np, u32 id_in)
   143	{
   144		return id_in;
   145	}
   146	#endif
   147	

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