Re: [PATCH 3/5] spi: spi-qpic: Add qpic spi nand driver support

[kernel test robot <lkp@intel.com>]

Hi Md,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20240215]
[also build test WARNING on linus/master v6.8-rc4]
[cannot apply to mtd/nand/next broonie-spi/for-next robh/for-next v6.8-rc4 v6.8-rc3 v6.8-rc2]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Md-Sadre-Alam/spi-dt-bindings-add-binding-doc-for-spi-qpic-snand/20240215-215348
base:   next-20240215
patch link:    https://lore.kernel.org/r/20240215134856.1313239-4-quic_mdalam%40quicinc.com
patch subject: [PATCH 3/5] spi: spi-qpic: Add qpic spi nand driver support
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20240217/202402172116.yfeRMLEF-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240217/202402172116.yfeRMLEF-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402172116.yfeRMLEF-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/spi/spi-qpic-snand.c: In function 'qpic_snand_ecc_init_ctx_pipelined':
   drivers/spi/spi-qpic-snand.c:161:14: warning: variable 'ecc_user' set but not used [-Wunused-but-set-variable]
     161 |         bool ecc_user = false;
         |              ^~~~~~~~
   drivers/spi/spi-qpic-snand.c:160:42: warning: variable 'desired_correction' set but not used [-Wunused-but-set-variable]
     160 |         int step_size = 0, strength = 0, desired_correction = 0, steps;
         |                                          ^~~~~~~~~~~~~~~~~~
   drivers/spi/spi-qpic-snand.c: In function 'qpic_snand_read_oob':
   drivers/spi/spi-qpic-snand.c:399:13: warning: variable 'oob_buf' set but not used [-Wunused-but-set-variable]
     399 |         u8 *oob_buf;
         |             ^~~~~~~
   drivers/spi/spi-qpic-snand.c: In function 'snandc_check_error':
   drivers/spi/spi-qpic-snand.c:452:37: warning: variable 'erased' set but not used [-Wunused-but-set-variable]
     452 |         bool serial_op_err = false, erased;
         |                                     ^~~~~~
   drivers/spi/spi-qpic-snand.c: In function 'qpic_snand_write_page_cache':
>> drivers/spi/spi-qpic-snand.c:682:30: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
     682 |                 snandc->wbuf = op->data.buf.out;
         |                              ^
>> drivers/spi/spi-qpic-snand.c:675:30: warning: variable 's_op' set but not used [-Wunused-but-set-variable]
     675 |         struct qpic_snand_op s_op = {};
         |                              ^~~~


vim +/const +682 drivers/spi/spi-qpic-snand.c

   671	
   672	static int qpic_snand_write_page_cache(struct qcom_nand_controller *snandc,
   673					       const struct spi_mem_op *op)
   674	{
 > 675		struct qpic_snand_op s_op = {};
   676		u32 cmd;
   677	
   678		cmd = qpic_snand_cmd_mapping(snandc, op->cmd.opcode);
   679		s_op.cmd_reg = cmd;
   680	
   681		if (op->cmd.opcode == SPINAND_PROGRAM_LOAD) {
 > 682			snandc->wbuf = op->data.buf.out;
   683			snandc->wlen = op->data.nbytes;
   684		}
   685	
   686		return 0;
   687	}
   688	

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