[PATCH v1 12/14] mtd: spi-nor: move all spansion specifics into spansion.c

[kernel test robot]

Hi Michael,

I love your patch! Perhaps something to improve:

[auto build test WARNING on mtd/spi-nor/next]
[also build test WARNING on linux/master linus/master v5.17-rc2 next-20220202]
[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]

url:    https://github.com/0day-ci/linux/commits/Michael-Walle/mtd-spi-nor-move-vendor-specific-code-into-vendor-modules/20220202-230139
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git spi-nor/next
config: x86_64-randconfig-a001 (https://download.01.org/0day-ci/archive/20220203/202202030449.IQfj2Y5O-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6b1e844b69f15bb7dffaf9365cd2b355d2eb7579)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/01f9808a20c96553c43f929e10f3fb448cd8bd93
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Michael-Walle/mtd-spi-nor-move-vendor-specific-code-into-vendor-modules/20220202-230139
        git checkout 01f9808a20c96553c43f929e10f3fb448cd8bd93
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/mtd/spi-nor/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> drivers/mtd/spi-nor/spansion.c:332:5: warning: no previous prototype for function 'spi_nor_sr_ready_and_clear' [-Wmissing-prototypes]
   int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
       ^
   drivers/mtd/spi-nor/spansion.c:332:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
   ^
   static 
   1 warning generated.


vim +/spi_nor_sr_ready_and_clear +332 drivers/mtd/spi-nor/spansion.c

   324	
   325	/**
   326	 * spi_nor_sr_ready_and_clear() - Query the Status Register to see if the flash
   327	 * is ready for new commands and clear it.
   328	 * @nor:	pointer to 'struct spi_nor'.
   329	 *
   330	 * Return: 1 if ready, 0 if not ready, -errno on errors.
   331	 */
 > 332	int spi_nor_sr_ready_and_clear(struct spi_nor *nor)
   333	{
   334		int ret;
   335	
   336		ret = spi_nor_read_sr(nor, nor->bouncebuf);
   337		if (ret)
   338			return ret;
   339	
   340		if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {
   341			if (nor->bouncebuf[0] & SR_E_ERR)
   342				dev_err(nor->dev, "Erase Error occurred\n");
   343			else
   344				dev_err(nor->dev, "Programming Error occurred\n");
   345	
   346			spi_nor_clear_sr(nor);
   347	
   348			/*
   349			 * WEL bit remains set to one when an erase or page program
   350			 * error occurs. Issue a Write Disable command to protect
   351			 * against inadvertent writes that can possibly corrupt the
   352			 * contents of the memory.
   353			 */
   354			ret = spi_nor_write_disable(nor);
   355			if (ret)
   356				return ret;
   357	
   358			return -EIO;
   359		}
   360	
   361		return !(nor->bouncebuf[0] & SR_WIP);
   362	}
   363	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org