[freescale-fslc:5.10-2.1.x-imx 11362/14590] drivers/pwm/pwm-rpmsg-imx.c:308:13: warning: variable 'ret' set but not used

[freescale-fslc:5.10-2.1.x-imx 11362/14590] drivers/pwm/pwm-rpmsg-imx.c:308:13: warning: variable 'ret' set but not used

[kernel test robot]

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tree:   https://github.com/Freescale/linux-fslc 5.10-2.1.x-imx
head:   54bd61ba352bffaf33ee2c956f140a565c9e2201
commit: 0e5079a51662f79d7a66565b0781e5fd91dada29 [11362/14590] MLK-25559-1 pwm: imx-rpchip: add pwm over rpmsg driver
config: sparc-allyesconfig (attached as .config)
compiler: sparc64-linux-gcc (GCC) 11.2.0
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/Freescale/linux-fslc/commit/0e5079a51662f79d7a66565b0781e5fd91dada29
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc 5.10-2.1.x-imx
        git checkout 0e5079a51662f79d7a66565b0781e5fd91dada29
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=sparc 

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/pwm/pwm-rpmsg-imx.c: In function 'pwm_rpchip_get_state':
>> drivers/pwm/pwm-rpmsg-imx.c:308:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
     308 |         int ret;
         |             ^~~


vim +/ret +308 drivers/pwm/pwm-rpmsg-imx.c

   302	
   303	static void pwm_rpchip_get_state(struct pwm_chip *chip,
   304					  struct pwm_device *pwm,
   305					  struct pwm_state *state)
   306	{
   307		struct imx_rpmsg_pwm_data *rdata = to_imx_rpmsg_pwm_chip(chip);
 > 308		int ret;
   309	
   310		mutex_lock(&pwm_rpmsg.lock);
   311	
   312		if (pwm_rpmsg.request_id >= 0xFF)
   313			pwm_rpmsg.request_id = 0;
   314		pwm_rpmsg.request_id++;
   315	
   316		pwm_rpmsg.chip_id = rdata->chip_id;
   317		pwm_rpmsg.channel_id = pwm->hwpwm;
   318		ret = pwm_rpsmg_get(&pwm_rpmsg, state);
   319	
   320		mutex_unlock(&pwm_rpmsg.lock);
   321	}
   322	

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

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