Hi Lorenzo, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20240424] [cannot apply to broonie-spi/for-next robh/for-next linus/master v6.9-rc5 v6.9-rc4 v6.9-rc3 v6.9-rc5] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Bianconi/dt-bindings-spi-airoha-Add-YAML-schema-for-SNFI-controller/20240426-164345 base: next-20240424 patch link: https://lore.kernel.org/r/2047e9c8372b51dc263178a12e194b8826f1abe7.1714119615.git.lorenzo%40kernel.org patch subject: [PATCH v4 3/3] spi: airoha: add SPI-NAND Flash controller driver config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20240428/202404280541.VkXyenQ3-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 5ef5eb66fb428aaf61fb51b709f065c069c11242) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240428/202404280541.VkXyenQ3-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202404280541.VkXyenQ3-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/spi/spi-airoha-snfi.c:12: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2254: include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from drivers/spi/spi-airoha-snfi.c:12: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from drivers/spi/spi-airoha-snfi.c:12: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from drivers/spi/spi-airoha-snfi.c:12: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/hexagon/include/asm/io.h:328: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> drivers/spi/spi-airoha-snfi.c:581:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 581 | default: | ^ drivers/spi/spi-airoha-snfi.c:581:2: note: insert 'break;' to avoid fall-through 581 | default: | ^ | break; 8 warnings generated. vim +581 drivers/spi/spi-airoha-snfi.c 539 540 static bool airoha_snand_is_page_ops(const struct spi_mem_op *op) 541 { 542 if (op->addr.nbytes != 2) 543 return false; 544 545 if (op->addr.buswidth != 1 && op->addr.buswidth != 2 && 546 op->addr.buswidth != 4) 547 return false; 548 549 switch (op->data.dir) { 550 case SPI_MEM_DATA_IN: 551 /* check dummy cycle first */ 552 if (op->dummy.nbytes * BITS_PER_BYTE / op->dummy.buswidth > 0xf) 553 return false; 554 555 /* quad io / quad out */ 556 if ((op->addr.buswidth == 4 || op->addr.buswidth == 1) && 557 op->data.buswidth == 4) 558 return true; 559 560 /* dual io / dual out */ 561 if ((op->addr.buswidth == 2 || op->addr.buswidth == 1) && 562 op->data.buswidth == 2) 563 return true; 564 565 /* standard spi */ 566 if (op->addr.buswidth == 1 && op->data.buswidth == 1) 567 return true; 568 break; 569 case SPI_MEM_DATA_OUT: 570 /* check dummy cycle first */ 571 if (op->dummy.nbytes) 572 return false; 573 574 /* program load quad out */ 575 if (op->addr.buswidth == 1 && op->data.buswidth == 4) 576 return true; 577 578 /* standard spi */ 579 if (op->addr.buswidth == 1 && op->data.buswidth == 1) 580 return true; > 581 default: 582 break; 583 } 584 585 return false; 586 } 587 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
