Re: [PATCH 13/13] mmc: dw_mmc: Remove struct dw_mci_slot

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

Hi Shawn,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20251120]
[cannot apply to krzk/for-next rockchip/for-next linus/master ulf-hansson-mmc-mirror/next v6.18-rc6 v6.18-rc5 v6.18-rc4 v6.18-rc6]
[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/Shawn-Lin/mmc-dw_mmc-Remove-unused-struct-dma_pdata/20251120-205522
base:   next-20251120
patch link:    https://lore.kernel.org/r/1763634565-183891-14-git-send-email-shawn.lin%40rock-chips.com
patch subject: [PATCH 13/13] mmc: dw_mmc: Remove struct dw_mci_slot
config: arc-randconfig-002-20251123 (https://download.01.org/0day-ci/archive/20251123/202511230231.JzqFjaBp-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251123/202511230231.JzqFjaBp-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/202511230231.JzqFjaBp-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/debugfs.h:16,
                    from drivers/mmc/host/dw_mmc.c:12:
>> drivers/mmc/host/dw_mmc.c:140:23: warning: 'dw_mci_req_fops' defined but not used [-Wunused-const-variable=]
     140 | DEFINE_SHOW_ATTRIBUTE(dw_mci_req);
         |                       ^~~~~~~~~~
   include/linux/seq_file.h:213:37: note: in definition of macro 'DEFINE_SHOW_ATTRIBUTE'
     213 | static const struct file_operations __name ## _fops = {                 \
         |                                     ^~~~~~


vim +/dw_mci_req_fops +140 drivers/mmc/host/dw_mmc.c

f95f3850f7a9e1 Will Newton 2011-01-02   99  
f95f3850f7a9e1 Will Newton 2011-01-02  100  #if defined(CONFIG_DEBUG_FS)
f95f3850f7a9e1 Will Newton 2011-01-02  101  static int dw_mci_req_show(struct seq_file *s, void *v)
f95f3850f7a9e1 Will Newton 2011-01-02  102  {
93ac9a7f4a2ac9 Shawn Lin   2025-11-20  103  	struct dw_mci *host = s->private;
f95f3850f7a9e1 Will Newton 2011-01-02  104  	struct mmc_request *mrq;
f95f3850f7a9e1 Will Newton 2011-01-02  105  	struct mmc_command *cmd;
f95f3850f7a9e1 Will Newton 2011-01-02  106  	struct mmc_command *stop;
f95f3850f7a9e1 Will Newton 2011-01-02  107  	struct mmc_data	*data;
f95f3850f7a9e1 Will Newton 2011-01-02  108  
f95f3850f7a9e1 Will Newton 2011-01-02  109  	/* Make sure we get a consistent snapshot */
93ac9a7f4a2ac9 Shawn Lin   2025-11-20  110  	spin_lock_bh(&host->lock);
93ac9a7f4a2ac9 Shawn Lin   2025-11-20  111  	mrq = host->mrq;
f95f3850f7a9e1 Will Newton 2011-01-02  112  
f95f3850f7a9e1 Will Newton 2011-01-02  113  	if (mrq) {
f95f3850f7a9e1 Will Newton 2011-01-02  114  		cmd = mrq->cmd;
f95f3850f7a9e1 Will Newton 2011-01-02  115  		data = mrq->data;
f95f3850f7a9e1 Will Newton 2011-01-02  116  		stop = mrq->stop;
f95f3850f7a9e1 Will Newton 2011-01-02  117  
f95f3850f7a9e1 Will Newton 2011-01-02  118  		if (cmd)
f95f3850f7a9e1 Will Newton 2011-01-02  119  			seq_printf(s,
f95f3850f7a9e1 Will Newton 2011-01-02  120  				   "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
f95f3850f7a9e1 Will Newton 2011-01-02  121  				   cmd->opcode, cmd->arg, cmd->flags,
f95f3850f7a9e1 Will Newton 2011-01-02  122  				   cmd->resp[0], cmd->resp[1], cmd->resp[2],
f95f3850f7a9e1 Will Newton 2011-01-02  123  				   cmd->resp[2], cmd->error);
f95f3850f7a9e1 Will Newton 2011-01-02  124  		if (data)
f95f3850f7a9e1 Will Newton 2011-01-02  125  			seq_printf(s, "DATA %u / %u * %u flg %x err %d\n",
f95f3850f7a9e1 Will Newton 2011-01-02  126  				   data->bytes_xfered, data->blocks,
f95f3850f7a9e1 Will Newton 2011-01-02  127  				   data->blksz, data->flags, data->error);
f95f3850f7a9e1 Will Newton 2011-01-02  128  		if (stop)
f95f3850f7a9e1 Will Newton 2011-01-02  129  			seq_printf(s,
f95f3850f7a9e1 Will Newton 2011-01-02  130  				   "CMD%u(0x%x) flg %x rsp %x %x %x %x err %d\n",
f95f3850f7a9e1 Will Newton 2011-01-02  131  				   stop->opcode, stop->arg, stop->flags,
f95f3850f7a9e1 Will Newton 2011-01-02  132  				   stop->resp[0], stop->resp[1], stop->resp[2],
f95f3850f7a9e1 Will Newton 2011-01-02  133  				   stop->resp[2], stop->error);
f95f3850f7a9e1 Will Newton 2011-01-02  134  	}
f95f3850f7a9e1 Will Newton 2011-01-02  135  
93ac9a7f4a2ac9 Shawn Lin   2025-11-20  136  	spin_unlock_bh(&host->lock);
f95f3850f7a9e1 Will Newton 2011-01-02  137  
f95f3850f7a9e1 Will Newton 2011-01-02  138  	return 0;
f95f3850f7a9e1 Will Newton 2011-01-02  139  }
64c1412b77d08d Shawn Lin   2018-02-23 @140  DEFINE_SHOW_ATTRIBUTE(dw_mci_req);
f95f3850f7a9e1 Will Newton 2011-01-02  141  

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