linux-kernel - include/linux/framer/framer.h:184:16: warning: no previous prototype for function 'framer

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Date: Sun, 24 Mar 2024 11:19:28 +0800
From: kernel test robot <lkp@...el.com>
To: Herve Codina <herve.codina@...tlin.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: include/linux/framer/framer.h:184:16: warning: no previous prototype
 for function 'framer_get'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   70293240c5ce675a67bfc48f419b093023b862b3
commit: 54762918ca856028d33d1d56d017a4d7706c6196 net: wan: fsl_qmc_hdlc: Add framer support
date:   13 days ago
config: powerpc-randconfig-003-20240324 (https://download.01.org/0day-ci/archive/20240324/202403241110.hfJqeJRu-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 23de3862dce582ce91c1aa914467d982cb1a73b4)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240324/202403241110.hfJqeJRu-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403241110.hfJqeJRu-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/net/wan/fsl_qmc_hdlc.c:14:
   In file included from include/linux/dma-mapping.h:11:
   In file included from include/linux/scatterlist.h:8:
   In file included from include/linux/mm.h:2188:
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from drivers/net/wan/fsl_qmc_hdlc.c:17:
>> include/linux/framer/framer.h:184:16: warning: no previous prototype for function 'framer_get' [-Wmissing-prototypes]
     184 | struct framer *framer_get(struct device *dev, const char *con_id)
         |                ^
   include/linux/framer/framer.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     184 | struct framer *framer_get(struct device *dev, const char *con_id)
         | ^
         | static 
>> include/linux/framer/framer.h:189:6: warning: no previous prototype for function 'framer_put' [-Wmissing-prototypes]
     189 | void framer_put(struct device *dev, struct framer *framer)
         |      ^
   include/linux/framer/framer.h:189:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     189 | void framer_put(struct device *dev, struct framer *framer)
         | ^
         | static 
   drivers/net/wan/fsl_qmc_hdlc.c:783:25: error: use of undeclared identifier 'qmc_hdlc_driver'; did you mean 'qmc_hdlc_probe'?
     783 | MODULE_DEVICE_TABLE(of, qmc_hdlc_driver);
         |                         ^~~~~~~~~~~~~~~
         |                         qmc_hdlc_probe
   include/linux/module.h:244:15: note: expanded from macro 'MODULE_DEVICE_TABLE'
     244 | extern typeof(name) __mod_##type##__##name##_device_table               \
         |               ^
   drivers/net/wan/fsl_qmc_hdlc.c:694:12: note: 'qmc_hdlc_probe' declared here
     694 | static int qmc_hdlc_probe(struct platform_device *pdev)
         |            ^
   3 warnings and 1 error generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HOTPLUG_CPU
   Depends on [n]: SMP [=y] && (PPC_PSERIES [=n] || PPC_PMAC [=n] || PPC_POWERNV [=n] || FSL_SOC_BOOKE [=n])
   Selected by [y]:
   - PM_SLEEP_SMP [=y] && SMP [=y] && (ARCH_SUSPEND_POSSIBLE [=y] || ARCH_HIBERNATION_POSSIBLE [=y]) && PM_SLEEP [=y]


vim +/framer_get +184 include/linux/framer/framer.h

82c944d05b1a24 Herve Codina 2023-11-28  183  
82c944d05b1a24 Herve Codina 2023-11-28 @184  struct framer *framer_get(struct device *dev, const char *con_id)
82c944d05b1a24 Herve Codina 2023-11-28  185  {
82c944d05b1a24 Herve Codina 2023-11-28  186  	return ERR_PTR(-ENOSYS);
82c944d05b1a24 Herve Codina 2023-11-28  187  }
82c944d05b1a24 Herve Codina 2023-11-28  188  
82c944d05b1a24 Herve Codina 2023-11-28 @189  void framer_put(struct device *dev, struct framer *framer)
82c944d05b1a24 Herve Codina 2023-11-28  190  {
82c944d05b1a24 Herve Codina 2023-11-28  191  }
82c944d05b1a24 Herve Codina 2023-11-28  192  

:::::: The code at line 184 was first introduced by commit
:::::: 82c944d05b1a24c76948ee9d6bb1d7de1ebb8b3a net: wan: Add framer framework support

:::::: TO: Herve Codina <herve.codina@...tlin.com>
:::::: CC: Linus Walleij <linus.walleij@...aro.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki