Hi Dikshita, kernel test robot noticed the following build warnings: [auto build test WARNING on 31aaa7d95e09892c81df0d7c49ae85640fa4e202] url: https://github.com/intel-lab-lkp/linux/commits/Dikshita-Agarwal-via-B4-Relay/dt-bindings-media-Add-sm8550-dt-schema/20240827-181059 base: 31aaa7d95e09892c81df0d7c49ae85640fa4e202 patch link: https://lore.kernel.org/r/20240827-iris_v3-v3-6-c5fdbbe65e70%40quicinc.com patch subject: [PATCH v3 06/29] media: iris: introduce iris core state management with shared queues config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240828/202408281019.97M0qU7D-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 08e5a1de8227512d4774a534b91cb2353cef6284) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240828/202408281019.97M0qU7D-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/202408281019.97M0qU7D-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/media/platform/qcom/iris/iris_probe.c:8: In file included from drivers/media/platform/qcom/iris/iris_core.h:10: In file included from include/media/v4l2-device.h:12: In file included from include/media/media-device.h:16: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: 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/media/platform/qcom/iris/iris_probe.c:8: In file included from drivers/media/platform/qcom/iris/iris_core.h:10: In file included from include/media/v4l2-device.h:12: In file included from include/media/media-device.h:16: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: 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/media/platform/qcom/iris/iris_probe.c:8: In file included from drivers/media/platform/qcom/iris/iris_core.h:10: In file included from include/media/v4l2-device.h:12: In file included from include/media/media-device.h:16: In file included from include/linux/pci.h:38: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:14: 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); | ~~~~~~~~~~ ^ In file included from drivers/media/platform/qcom/iris/iris_probe.c:8: In file included from drivers/media/platform/qcom/iris/iris_core.h:10: In file included from include/media/v4l2-device.h:12: In file included from include/media/media-device.h:16: In file included from include/linux/pci.h:2669: 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:2228: 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_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/media/platform/qcom/iris/iris_probe.c:114:35: warning: implicit conversion from 'unsigned long long' to 'unsigned long' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion] 114 | dma_set_seg_boundary(&pdev->dev, DMA_BIT_MASK(64)); | ~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~ include/linux/dma-mapping.h:77:40: note: expanded from macro 'DMA_BIT_MASK' 77 | #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1)) | ^~~~~ 8 warnings generated. vim +114 drivers/media/platform/qcom/iris/iris_probe.c 59 60 static int iris_probe(struct platform_device *pdev) 61 { 62 struct device *dev = &pdev->dev; 63 struct iris_core *core; 64 u64 dma_mask; 65 int ret; 66 67 core = devm_kzalloc(&pdev->dev, sizeof(*core), GFP_KERNEL); 68 if (!core) 69 return -ENOMEM; 70 core->dev = dev; 71 72 core->state = IRIS_CORE_DEINIT; 73 mutex_init(&core->lock); 74 75 core->reg_base = devm_platform_ioremap_resource(pdev, 0); 76 if (IS_ERR(core->reg_base)) 77 return PTR_ERR(core->reg_base); 78 79 core->irq = platform_get_irq(pdev, 0); 80 if (core->irq < 0) 81 return core->irq; 82 83 core->iris_platform_data = of_device_get_match_data(core->dev); 84 if (!core->iris_platform_data) { 85 ret = -ENODEV; 86 dev_err_probe(core->dev, ret, "init platform failed\n"); 87 return ret; 88 } 89 90 iris_init_ops(core); 91 ret = iris_init_resources(core); 92 if (ret) { 93 dev_err_probe(core->dev, ret, "init resource failed\n"); 94 return ret; 95 } 96 97 ret = v4l2_device_register(dev, &core->v4l2_dev); 98 if (ret) 99 return ret; 100 101 ret = iris_register_video_device(core); 102 if (ret) 103 goto err_v4l2_unreg; 104 105 platform_set_drvdata(pdev, core); 106 107 dma_mask = core->iris_platform_data->dma_mask; 108 109 ret = dma_set_mask_and_coherent(dev, dma_mask); 110 if (ret) 111 goto err_vdev_unreg; 112 113 dma_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); > 114 dma_set_seg_boundary(&pdev->dev, DMA_BIT_MASK(64)); 115 116 return 0; 117 118 err_vdev_unreg: 119 video_unregister_device(core->vdev_dec); 120 err_v4l2_unreg: 121 v4l2_device_unregister(&core->v4l2_dev); 122 123 return ret; 124 } 125 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
