[xilinx-xlnx:xlnx_rebase_v5.4 842/1768] drivers/spi/spi-mem.c:18:6: sparse: sparse: symbol 'update_stripe' was not declared. Should it be static?

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4
head:   abafefebd1f1e040eef74e4ab571ea08bf745641
commit: 3780469dd372e934445de2fbb5e8cf6e712b9b99 [842/1768] spi: Add Zynq QSPI controller driver
config: i386-randconfig-s002-20211216 (https://download.01.org/0day-ci/archive/20211218/202112180027.pfNQ2O7x-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/Xilinx/linux-xlnx/commit/3780469dd372e934445de2fbb5e8cf6e712b9b99
        git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.4
        git checkout 3780469dd372e934445de2fbb5e8cf6e712b9b99
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpio/ drivers/spi/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>


sparse warnings: (new ones prefixed by >>)
   drivers/spi/spi-mem.c: note: in included file (through include/linux/mtd/spi-nor.h):

quoted

include/linux/mtd/cfi.h:62:2: sparse: sparse: No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.
drivers/spi/spi-mem.c:18:6: sparse: sparse: symbol 'update_stripe' was not declared. Should it be static?

vim +/update_stripe +18 drivers/spi/spi-mem.c

    17	
  > 18	bool update_stripe(const u8 opcode)
    19	{
    20		if (opcode ==  SPINOR_OP_BE_4K ||
    21		    opcode ==  SPINOR_OP_BE_32K ||
    22		    opcode ==  SPINOR_OP_CHIP_ERASE ||
    23		    opcode ==  SPINOR_OP_SE ||
    24		    opcode ==  SPINOR_OP_BE_32K_4B ||
    25		    opcode ==  SPINOR_OP_SE_4B ||
    26		    opcode == SPINOR_OP_BE_4K_4B ||
    27		    opcode ==  SPINOR_OP_WRSR ||
    28		    opcode ==  SPINOR_OP_WREAR ||
    29		    opcode ==  SPINOR_OP_BRWR ||
    30		    opcode ==  SPINOR_OP_WRSR2)
    31			return false;
    32	
    33		return true;
    34	}
    35	

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

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