[android-common:android-4.19-stable 15107/29506] drivers/nvmem/core.c:347:5: warning: no previous prototype for 'nvmem_add_cells'

[android-common:android-4.19-stable 15107/29506] drivers/nvmem/core.c:347:5: warning: no previous prototype for 'nvmem_add_cells'

[kernel test robot]

Hi Bartosz,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android-4.19-stable
head:   7cf5d82154dcd64ff75b69f3dc8dbff4ed2d2816
commit: e96a10625581a499e8a4218ef504f3f53918408b [15107/29506] UPSTREAM: nvmem: add support for cell info
config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20230512/202305120736.VdpP64Ta-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build):
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-4.19-stable
        git checkout e96a10625581a499e8a4218ef504f3f53918408b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/nvmem/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305120736.VdpP64Ta-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/nvmem/core.c:347:5: warning: no previous prototype for 'nvmem_add_cells' [-Wmissing-prototypes]
     347 | int nvmem_add_cells(struct nvmem_device *nvmem,
         |     ^~~~~~~~~~~~~~~


vim +/nvmem_add_cells +347 drivers/nvmem/core.c

eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  337  
b3db17e4b864e4 Andrew Lunn         2018-05-11  338  /**
b3db17e4b864e4 Andrew Lunn         2018-05-11  339   * nvmem_add_cells() - Add cell information to an nvmem device
b3db17e4b864e4 Andrew Lunn         2018-05-11  340   *
b3db17e4b864e4 Andrew Lunn         2018-05-11  341   * @nvmem: nvmem device to add cells to.
b3db17e4b864e4 Andrew Lunn         2018-05-11  342   * @info: nvmem cell info to add to the device
b3db17e4b864e4 Andrew Lunn         2018-05-11  343   * @ncells: number of cells in info
b3db17e4b864e4 Andrew Lunn         2018-05-11  344   *
b3db17e4b864e4 Andrew Lunn         2018-05-11  345   * Return: 0 or negative error code on failure.
b3db17e4b864e4 Andrew Lunn         2018-05-11  346   */
b3db17e4b864e4 Andrew Lunn         2018-05-11 @347  int nvmem_add_cells(struct nvmem_device *nvmem,
b3db17e4b864e4 Andrew Lunn         2018-05-11  348  		    const struct nvmem_cell_info *info,
b3db17e4b864e4 Andrew Lunn         2018-05-11  349  		    int ncells)
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  350  {
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  351  	struct nvmem_cell **cells;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  352  	int i, rval;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  353  
b3db17e4b864e4 Andrew Lunn         2018-05-11  354  	cells = kcalloc(ncells, sizeof(*cells), GFP_KERNEL);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  355  	if (!cells)
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  356  		return -ENOMEM;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  357  
b3db17e4b864e4 Andrew Lunn         2018-05-11  358  	for (i = 0; i < ncells; i++) {
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  359  		cells[i] = kzalloc(sizeof(**cells), GFP_KERNEL);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  360  		if (!cells[i]) {
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  361  			rval = -ENOMEM;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  362  			goto err;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  363  		}
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  364  
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  365  		rval = nvmem_cell_info_to_nvmem_cell(nvmem, &info[i], cells[i]);
287980e49ffc0f Arnd Bergmann       2016-05-27  366  		if (rval) {
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  367  			kfree(cells[i]);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  368  			goto err;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  369  		}
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  370  
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  371  		nvmem_cell_add(cells[i]);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  372  	}
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  373  
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  374  	/* remove tmp array */
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  375  	kfree(cells);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  376  
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  377  	return 0;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  378  err:
dfdf141429f089 Rasmus Villemoes    2016-02-08  379  	while (i--)
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  380  		nvmem_cell_drop(cells[i]);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  381  
dfdf141429f089 Rasmus Villemoes    2016-02-08  382  	kfree(cells);
dfdf141429f089 Rasmus Villemoes    2016-02-08  383  
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  384  	return rval;
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  385  }
b3db17e4b864e4 Andrew Lunn         2018-05-11  386  EXPORT_SYMBOL_GPL(nvmem_add_cells);
eace75cfdcf7d9 Srinivas Kandagatla 2015-07-27  387  

:::::: The code at line 347 was first introduced by commit
:::::: b3db17e4b864e46ad150ebef69c0e0130a1c5fca drivers: nvmem: Export nvmem_add_cells()

:::::: TO: Andrew Lunn <andrew@lunn.ch>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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