Re: [PATCH 1/4] staging: r8188eu: add error handling of rtw_read8

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

Hi Pavel,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on staging/staging-testing]

url:    https://github.com/intel-lab-lkp/linux/commits/Pavel-Skripkin/staging-r8188eu-add-error-handling-of-usb-read-errors/20220519-061342
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git e41f7a5521d7f03dca99e3207633df71740569dd
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20220519/202205190916.GRvUby7c-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.3.0
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/intel-lab-lkp/linux/commit/f8c9bd199a25d7a1d8f6fed1b0d5da9cec1f8faa
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Pavel-Skripkin/staging-r8188eu-add-error-handling-of-usb-read-errors/20220519-061342
        git checkout f8c9bd199a25d7a1d8f6fed1b0d5da9cec1f8faa
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/staging/r8188eu/

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

All warnings (new ones prefixed by >>):

   drivers/staging/r8188eu/hal/usb_halinit.c: In function '_InitBeaconParameters':
>> drivers/staging/r8188eu/hal/usb_halinit.c:465:13: warning: variable 'res' set but not used [-Wunused-but-set-variable]
     465 |         int res;
         |             ^~~
--
   drivers/staging/r8188eu/os_dep/ioctl_linux.c: In function 'rtw_dbg_port':
>> drivers/staging/r8188eu/os_dep/ioctl_linux.c:3419:32: warning: variable 'res' set but not used [-Wunused-but-set-variable]
    3419 |                         int i, res;
         |                                ^~~


vim +/res +465 drivers/staging/r8188eu/hal/usb_halinit.c

   461	
   462	static void _InitBeaconParameters(struct adapter *Adapter)
   463	{
   464		struct hal_data_8188e *haldata = &Adapter->haldata;
 > 465		int res;
   466	
   467		rtw_write16(Adapter, REG_BCN_CTRL, 0x1010);
   468	
   469		/*  TODO: Remove these magic number */
   470		rtw_write16(Adapter, REG_TBTT_PROHIBIT, 0x6404);/*  ms */
   471		rtw_write8(Adapter, REG_DRVERLYINT, DRIVER_EARLY_INT_TIME);/*  5ms */
   472		rtw_write8(Adapter, REG_BCNDMATIM, BCN_DMA_ATIME_INT_TIME); /*  2ms */
   473	
   474		/*  Suggested by designer timchen. Change beacon AIFS to the largest number */
   475		/*  beacause test chip does not contension before sending beacon. by tynli. 2009.11.03 */
   476		rtw_write16(Adapter, REG_BCNTCFG, 0x660F);
   477	
   478		/* FIXME: return an error to caller */
   479		res = rtw_read8(Adapter, REG_FWHW_TXQ_CTRL + 2, &haldata->RegFwHwTxQCtrl);
   480		res = rtw_read8(Adapter, REG_TBTT_PROHIBIT + 2, &haldata->RegReg542);
   481		res = rtw_read8(Adapter, REG_CR + 1, &haldata->RegCR_1);
   482	}
   483	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp