[intel-lts:5.15/linux 16/16] drivers/i2c/busses/i2c-designware-pcidrv.c:75:12: warning: 'dw_reg_write' defined but not used

[intel-lts:5.15/linux 16/16] drivers/i2c/busses/i2c-designware-pcidrv.c:75:12: warning: 'dw_reg_write' defined but not used

[kernel test robot]

:::::: 
:::::: Manual check reason: "gcc: unused function warning for stub function"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: "D, Lakshmi Sowjanya" <lakshmi.sowjanya.d@intel.com>
CC: nanli2x <nanx.li@intel.com>

tree:   https://github.com/intel/linux-intel-lts.git 5.15/linux
head:   4e26912f977bc8d60339bfcd56a777a08ded493d
commit: 1ec5959a8f6dbfbb47057317bc935924cd8d6977 [16/16] i2c: Add read and write functions in pcidrv
:::::: branch date: 7 days ago
:::::: commit date: 8 months ago
config: x86_64-randconfig-a013-20230116 (https://download.01.org/0day-ci/archive/20230119/202301191228.UkOxHkfK-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel/linux-intel-lts/commit/1ec5959a8f6dbfbb47057317bc935924cd8d6977
        git remote add intel-lts https://github.com/intel/linux-intel-lts.git
        git fetch --no-tags intel-lts 5.15/linux
        git checkout 1ec5959a8f6dbfbb47057317bc935924cd8d6977
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> drivers/i2c/busses/i2c-designware-pcidrv.c:75:12: warning: 'dw_reg_write' defined but not used [-Wunused-function]
      75 | static int dw_reg_write(struct dw_i2c_dev *dev, unsigned int reg, unsigned int val)
         |            ^~~~~~~~~~~~
>> drivers/i2c/busses/i2c-designware-pcidrv.c:69:12: warning: 'dw_reg_read' defined but not used [-Wunused-function]
      69 | static int dw_reg_read(struct dw_i2c_dev *dev, unsigned int reg, unsigned int *val)
         |            ^~~~~~~~~~~


vim +/dw_reg_write +75 drivers/i2c/busses/i2c-designware-pcidrv.c

fe20ff5c7e9ca7 Dirk Brandewie      2011-10-06  68  
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03 @69  static int dw_reg_read(struct dw_i2c_dev *dev, unsigned int reg, unsigned int *val)
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  70  {
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  71  	*val = readl_relaxed(dev->base + reg);
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  72  	return 0;
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  73  }
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  74  
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03 @75  static int dw_reg_write(struct dw_i2c_dev *dev, unsigned int reg, unsigned int val)
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  76  {
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  77  	writel_relaxed(val, dev->base + reg);
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  78  	return 0;
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  79  }
1ec5959a8f6dbf D, Lakshmi Sowjanya 2022-03-03  80  

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