[chrome-os:chromeos-5.10 11827/11855] drivers/pinctrl/pinctrl-single.c:725:6: error: variable 'num_pins_in_register' set but not used

[chrome-os:chromeos-5.10 11827/11855] drivers/pinctrl/pinctrl-single.c:725:6: error: variable 'num_pins_in_register' set but not used

[kernel test robot]

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tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.10
head:   7f83e3957ff9006bacf8f0384e1f4992b8308c59
commit: a2f0fe92566de31d701bbb9952d576b48c1c4dd3 [11827/11855] CHROMIUM: Merge 'v5.10.37' into chromeos-5.10
config: csky-randconfig-r023-20210519 (attached as .config)
compiler: csky-linux-gcc (GCC) 9.3.0
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
        git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel
        git fetch --no-tags chrome-os chromeos-5.10
        git checkout a2f0fe92566de31d701bbb9952d576b48c1c4dd3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=csky 

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

All errors (new ones prefixed by >>):

   drivers/pinctrl/pinctrl-single.c: In function 'pcs_allocate_pin_table':
>> drivers/pinctrl/pinctrl-single.c:725:6: error: variable 'num_pins_in_register' set but not used [-Werror=unused-but-set-variable]
     725 |  int num_pins_in_register = 0;
         |      ^~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/num_pins_in_register +725 drivers/pinctrl/pinctrl-single.c

8b8b091bf07fa7 Tony Lindgren          2012-07-10  712  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  713  /**
8b8b091bf07fa7 Tony Lindgren          2012-07-10  714   * pcs_allocate_pin_table() - adds all the pins for the pinctrl driver
8b8b091bf07fa7 Tony Lindgren          2012-07-10  715   * @pcs: pcs driver instance
8b8b091bf07fa7 Tony Lindgren          2012-07-10  716   *
8b8b091bf07fa7 Tony Lindgren          2012-07-10  717   * In case of errors, resources are freed in pcs_free_resources.
8b8b091bf07fa7 Tony Lindgren          2012-07-10  718   *
8b8b091bf07fa7 Tony Lindgren          2012-07-10  719   * If your hardware needs holes in the address space, then just set
8b8b091bf07fa7 Tony Lindgren          2012-07-10  720   * up multiple driver instances.
8b8b091bf07fa7 Tony Lindgren          2012-07-10  721   */
150632b09aadf1 Greg Kroah-Hartman     2012-12-21  722  static int pcs_allocate_pin_table(struct pcs_device *pcs)
8b8b091bf07fa7 Tony Lindgren          2012-07-10  723  {
8b8b091bf07fa7 Tony Lindgren          2012-07-10  724  	int mux_bytes, nr_pins, i;
6f924b0b7cbe2a Manjunathappa, Prakash 2013-05-21 @725  	int num_pins_in_register = 0;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  726  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  727  	mux_bytes = pcs->width / BITS_PER_BYTE;
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  728  
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  729  	if (pcs->bits_per_mux) {
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  730  		pcs->bits_per_pin = fls(pcs->fmask);
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  731  		nr_pins = (pcs->size * BITS_PER_BYTE) / pcs->bits_per_pin;
6f924b0b7cbe2a Manjunathappa, Prakash 2013-05-21  732  		num_pins_in_register = pcs->width / pcs->bits_per_pin;
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  733  	} else {
8b8b091bf07fa7 Tony Lindgren          2012-07-10  734  		nr_pins = pcs->size / mux_bytes;
4e7e8017a80e18 Manjunathappa, Prakash 2013-05-21  735  	}
8b8b091bf07fa7 Tony Lindgren          2012-07-10  736  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  737  	dev_dbg(pcs->dev, "allocating %i pins\n", nr_pins);
a86854d0c599b3 Kees Cook              2018-06-12  738  	pcs->pins.pa = devm_kcalloc(pcs->dev,
a86854d0c599b3 Kees Cook              2018-06-12  739  				nr_pins, sizeof(*pcs->pins.pa),
8b8b091bf07fa7 Tony Lindgren          2012-07-10  740  				GFP_KERNEL);
8b8b091bf07fa7 Tony Lindgren          2012-07-10  741  	if (!pcs->pins.pa)
8b8b091bf07fa7 Tony Lindgren          2012-07-10  742  		return -ENOMEM;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  743  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  744  	pcs->desc.pins = pcs->pins.pa;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  745  	pcs->desc.npins = nr_pins;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  746  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  747  	for (i = 0; i < pcs->desc.npins; i++) {
8b8b091bf07fa7 Tony Lindgren          2012-07-10  748  		unsigned offset;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  749  		int res;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  750  
da40d5fec5d70e Hanna Hawa             2021-03-19  751  		offset = pcs_pin_reg_offset_get(pcs, i);
353fcebf49e24e Hanna Hawa             2021-03-19  752  		res = pcs_add_pin(pcs, offset);
8b8b091bf07fa7 Tony Lindgren          2012-07-10  753  		if (res < 0) {
8b8b091bf07fa7 Tony Lindgren          2012-07-10  754  			dev_err(pcs->dev, "error adding pins: %i\n", res);
8b8b091bf07fa7 Tony Lindgren          2012-07-10  755  			return res;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  756  		}
8b8b091bf07fa7 Tony Lindgren          2012-07-10  757  	}
8b8b091bf07fa7 Tony Lindgren          2012-07-10  758  
8b8b091bf07fa7 Tony Lindgren          2012-07-10  759  	return 0;
8b8b091bf07fa7 Tony Lindgren          2012-07-10  760  }
8b8b091bf07fa7 Tony Lindgren          2012-07-10  761  

:::::: The code at line 725 was first introduced by commit
:::::: 6f924b0b7cbe2a3d9c08f6134343fd366c35fdfa pinctrl: pinctrl-single: pin names for pinctrl-single.bits

:::::: TO: Manjunathappa, Prakash <prakash.pm@ti.com>
:::::: CC: Linus Walleij <linus.walleij@linaro.org>

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

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