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(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/pinctrl/pinctrl-single.c: In function 'pcs_allocate_pin_table': 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(a)ti.com&gt; :::::: CC: Linus Walleij <linus.walleij(a)linaro.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org