tree: https://github.com/Xilinx/linux-xlnx master head: 0605a36e057480f3a83ae401e7ff59739da78e82 commit: 26d248f9f56a753db263a6adde4a04f0c6265374 [11923/12130] mtd: spi-nor: Added EAR support for Zynq qspi driver config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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 # https://github.com/Xilinx/linux-xlnx/commit/26d248f9f56a753db263a6adde4a0... git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx master git checkout 26d248f9f56a753db263a6adde4a04f0c6265374 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/mtd/spi-nor/core.c: In function 'spi_nor_write_ear': 454 | u32 ear; | ^~~ vim +454 drivers/mtd/spi-nor/core.c 443 444 /** 445 * spi_nor_write_ear() - Write Extended Address Register. 446 * @nor: pointer to 'struct spi_nor'. 447 * @ear: value to write to the Extended Address Register. 448 * 449 * Return: 0 on success, -errno otherwise. 450 */ 451 int spi_nor_write_ear(struct spi_nor *nor, u32 addr) 452 { 453 u8 code = SPINOR_OP_WREAR;; 455 int ret; 456 struct mtd_info *mtd = &nor->mtd; 457 458 /* Wait until finished previous write command. */ 459 if (spi_nor_wait_till_ready(nor)) 460 return 1; 461 462 if (mtd->size <= (0x1000000) << nor->shift) 463 return 0; 464 465 addr = addr % (u32)mtd->size; 466 ear = addr >> 24; 467 468 if (!nor->isstacked && ear == nor->curbank) 469 return 0; 470 471 if (nor->isstacked && mtd->size <= 0x2000000) 472 return 0; 473 474 if (nor->jedec_id == CFI_MFR_AMD) 475 code = SPINOR_OP_BRWR; 476 if (nor->jedec_id == CFI_MFR_ST || 477 nor->jedec_id == CFI_MFR_MACRONIX || 478 nor->jedec_id == CFI_MFR_PMC) { 479 spi_nor_write_enable(nor); 480 code = SPINOR_OP_WREAR; 481 } 482 nor->bouncebuf[0] = ear; 483 484 if (nor->spimem) { 485 struct spi_mem_op op = 486 SPI_MEM_OP(SPI_MEM_OP_CMD(code, 1), 487 SPI_MEM_OP_NO_ADDR, 488 SPI_MEM_OP_NO_DUMMY, 489 SPI_MEM_OP_DATA_OUT(1, nor->bouncebuf, 1)); 490 491 ret = spi_mem_exec_op(nor->spimem, &op); 492 } else { 493 ret = nor->controller_ops->write_reg(nor, code, nor->bouncebuf, 1); 494 if (ret < 0) 495 return ret; 496 } 497 498 nor->curbank = ear; 499 500 return ret; 501 } 502 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org