tree: https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/gpio-immutable head: 5bcef0d59c643b8a70398229d4e3b264d3079c48 commit: a464bf5adf64dc347b1c786351be4a8df88dcf8d [21/29] gpio: mt7621: Switch to dynamic chip name output config: nds32-randconfig-r023-20220211 (https://download.01.org/0day-ci/archive/20220212/202202120045.xNOMcTC6-lk...) compiler: nds32le-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://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/com... git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git git fetch --no-tags arm-platforms irq/gpio-immutable git checkout a464bf5adf64dc347b1c786351be4a8df88dcf8d # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nds32 SHELL=/bin/bash drivers/gpio/ 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/gpio/gpio-mt7621.c: In function 'mediatek_gpio_bank_probe': 255 | rg->irq_chip.irq_print_chip = mediatek_gpio_irq_print_chip; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ | mediatek_irq_print_chip drivers/gpio/gpio-mt7621.c:255:39: note: each undeclared identifier is reported only once for each function it appears in At top level: drivers/gpio/gpio-mt7621.c:192:13: warning: 'mediatek_irq_print_chip' defined but not used [-Wunused-function] 192 | static void mediatek_irq_print_chip(struct irq_data *d, struct seq_file *p) | ^~~~~~~~~~~~~~~~~~~~~~~ vim +255 drivers/gpio/gpio-mt7621.c 216 217 static int 218 mediatek_gpio_bank_probe(struct device *dev, int bank) 219 { 220 struct mtk *mtk = dev_get_drvdata(dev); 221 struct mtk_gc *rg; 222 void __iomem *dat, *set, *ctrl, *diro; 223 int ret; 224 225 rg = &mtk->gc_map[bank]; 226 memset(rg, 0, sizeof(*rg)); 227 228 spin_lock_init(&rg->lock); 229 rg->bank = bank; 230 231 dat = mtk->base + GPIO_REG_DATA + (rg->bank * GPIO_BANK_STRIDE); 232 set = mtk->base + GPIO_REG_DSET + (rg->bank * GPIO_BANK_STRIDE); 233 ctrl = mtk->base + GPIO_REG_DCLR + (rg->bank * GPIO_BANK_STRIDE); 234 diro = mtk->base + GPIO_REG_CTRL + (rg->bank * GPIO_BANK_STRIDE); 235 236 ret = bgpio_init(&rg->chip, dev, 4, dat, set, ctrl, diro, NULL, 237 BGPIOF_NO_SET_ON_INPUT); 238 if (ret) { 239 dev_err(dev, "bgpio_init() failed\n"); 240 return ret; 241 } 242 243 rg->chip.of_gpio_n_cells = 2; 244 rg->chip.of_xlate = mediatek_gpio_xlate; 245 rg->chip.label = devm_kasprintf(dev, GFP_KERNEL, "%s-bank%d", 246 dev_name(dev), bank); 247 if (!rg->chip.label) 248 return -ENOMEM; 249 250 rg->chip.offset = bank * MTK_BANK_WIDTH; 251 rg->irq_chip.irq_unmask = mediatek_gpio_irq_unmask; 252 rg->irq_chip.irq_mask = mediatek_gpio_irq_mask; 253 rg->irq_chip.irq_mask_ack = mediatek_gpio_irq_mask; 254 rg->irq_chip.irq_set_type = mediatek_gpio_irq_type; 256 257 if (mtk->gpio_irq) { 258 struct gpio_irq_chip *girq; 259 260 /* 261 * Directly request the irq here instead of passing 262 * a flow-handler because the irq is shared. 263 */ 264 ret = devm_request_irq(dev, mtk->gpio_irq, 265 mediatek_gpio_irq_handler, IRQF_SHARED, 266 rg->chip.label, &rg->chip); 267 268 if (ret) { 269 dev_err(dev, "Error requesting IRQ %d: %d\n", 270 mtk->gpio_irq, ret); 271 return ret; 272 } 273 274 girq = &rg->chip.irq; 275 girq->chip = &rg->irq_chip; 276 /* This will let us handle the parent IRQ in the driver */ 277 girq->parent_handler = NULL; 278 girq->num_parents = 0; 279 girq->parents = NULL; 280 girq->default_type = IRQ_TYPE_NONE; 281 girq->handler = handle_simple_irq; 282 } 283 284 ret = devm_gpiochip_add_data(dev, &rg->chip, mtk); 285 if (ret < 0) { 286 dev_err(dev, "Could not register gpio %d, ret=%d\n", 287 rg->chip.ngpio, ret); 288 return ret; 289 } 290 291 /* set polarity to low for all gpios */ 292 mtk_gpio_w32(rg, GPIO_REG_POL, 0); 293 294 dev_info(dev, "registering %d gpios\n", rg->chip.ngpio); 295 296 return 0; 297 } 298 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org