[soc:board-remove-7.3 226/294] drivers/mtd/spi-nor/spansion.c:100:9: error: call to undeclared function 'spi_nor_controller_ops_write_reg'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git board-remove-7.3
head:   3ac93c1e700558259ea604f7d4f37e26820fba15
commit: 62e3b560c8fdcab6be5dce819f3b76df95cd95dc [226/294] mtd: spi-nor: remove controller_ops support
config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20260910/202609101458.dCAUeSAA-lkp@intel.com/config)
compiler: clang version 22.1.8 (https://github.com/llvm/llvm-project ca7933e47d3a3451d81e72ac174dcb5aa28b59d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260910/202609101458.dCAUeSAA-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609101458.dCAUeSAA-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/mtd/spi-nor/spansion.c:100:9: error: call to undeclared function 'spi_nor_controller_ops_write_reg'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     100 |                 ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,
         |                       ^
   1 error generated.
--
>> drivers/mtd/spi-nor/winbond.c:122:9: error: call to undeclared function 'spi_nor_controller_ops_write_reg'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     122 |                 ret = spi_nor_controller_ops_write_reg(nor,
         |                       ^
   drivers/mtd/spi-nor/winbond.c:424:9: error: call to undeclared function 'spi_nor_controller_ops_write_reg'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     424 |                 ret = spi_nor_controller_ops_write_reg(nor,
         |                       ^
   2 errors generated.


vim +/spi_nor_controller_ops_write_reg +100 drivers/mtd/spi-nor/spansion.c

d534fd9787d592 Takahiro Kuwano 2023-07-26   83  
91f3c430f622be Takahiro Kuwano 2023-04-07   84  /**
91f3c430f622be Takahiro Kuwano 2023-04-07   85   * spansion_nor_clear_sr() - Clear the Status Register.
91f3c430f622be Takahiro Kuwano 2023-04-07   86   * @nor:	pointer to 'struct spi_nor'.
91f3c430f622be Takahiro Kuwano 2023-04-07   87   */
91f3c430f622be Takahiro Kuwano 2023-04-07   88  static void spansion_nor_clear_sr(struct spi_nor *nor)
91f3c430f622be Takahiro Kuwano 2023-04-07   89  {
d534fd9787d592 Takahiro Kuwano 2023-07-26   90  	const struct spansion_nor_params *priv_params = nor->params->priv;
91f3c430f622be Takahiro Kuwano 2023-04-07   91  	int ret;
91f3c430f622be Takahiro Kuwano 2023-04-07   92  
91f3c430f622be Takahiro Kuwano 2023-04-07   93  	if (nor->spimem) {
d534fd9787d592 Takahiro Kuwano 2023-07-26   94  		struct spi_mem_op op = SPANSION_OP(priv_params->clsr);
91f3c430f622be Takahiro Kuwano 2023-04-07   95  
91f3c430f622be Takahiro Kuwano 2023-04-07   96  		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
91f3c430f622be Takahiro Kuwano 2023-04-07   97  
91f3c430f622be Takahiro Kuwano 2023-04-07   98  		ret = spi_mem_exec_op(nor->spimem, &op);
91f3c430f622be Takahiro Kuwano 2023-04-07   99  	} else {
91f3c430f622be Takahiro Kuwano 2023-04-07 @100  		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,
91f3c430f622be Takahiro Kuwano 2023-04-07  101  						       NULL, 0);
91f3c430f622be Takahiro Kuwano 2023-04-07  102  	}
91f3c430f622be Takahiro Kuwano 2023-04-07  103  
91f3c430f622be Takahiro Kuwano 2023-04-07  104  	if (ret)
91f3c430f622be Takahiro Kuwano 2023-04-07  105  		dev_dbg(nor->dev, "error %d clearing SR\n", ret);
91f3c430f622be Takahiro Kuwano 2023-04-07  106  }
91f3c430f622be Takahiro Kuwano 2023-04-07  107  

:::::: The code at line 100 was first introduced by commit
:::::: 91f3c430f622befb1b11f07df3bf7163f46adda6 mtd: spi-nor: spansion: Add a new ->ready() hook for multi-chip device

:::::: TO: Takahiro Kuwano <Takahiro.Kuwano at infineon.com>
:::::: CC: Tudor Ambarus <tudor.ambarus at linaro.org>

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