Hi WangYuli, kernel test robot noticed the following build warnings: [auto build test WARNING on tty/tty-testing] [also build test WARNING on tty/tty-next tty/tty-linus usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.13-rc6 next-20250110] [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/WangYuli/serial-8250_it8768e-Create-iTE-IT8768E-specific-8250-driver/20250109-201036 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing patch link: https://lore.kernel.org/r/41B1320691916DE6%2B20250109120808.559950-1-wangyuli%40uniontech.com patch subject: [PATCH] serial: 8250_it8768e: Create iTE IT8768E specific 8250 driver config: i386-randconfig-062-20250111 (https://download.01.org/0day-ci/archive/20250111/202501110920.kLUGElwx-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250111/202501110920.kLUGElwx-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/202501110920.kLUGElwx-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/tty/serial/8250/8250_it8768e.c:39:18: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *[noderef] __iomem sio_base @@ got void [noderef] __iomem * @@ drivers/tty/serial/8250/8250_it8768e.c:39:18: sparse: expected void *[noderef] __iomem sio_base drivers/tty/serial/8250/8250_it8768e.c:39:18: sparse: got void [noderef] __iomem * >> drivers/tty/serial/8250/8250_it8768e.c:58:33: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected unsigned char [noderef] __iomem *membase @@ got void *[noderef] __iomem sio_base @@ drivers/tty/serial/8250/8250_it8768e.c:58:33: sparse: expected unsigned char [noderef] __iomem *membase drivers/tty/serial/8250/8250_it8768e.c:58:33: sparse: got void *[noderef] __iomem sio_base >> drivers/tty/serial/8250/8250_it8768e.c:40:14: sparse: sparse: dereference of noderef expression vim +39 drivers/tty/serial/8250/8250_it8768e.c 26 27 static int it8768e_probe(struct platform_device *pdev) 28 { 29 struct it8768e_data *data; 30 struct resource *res; 31 void *__iomem sio_base; 32 33 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 34 if (!res) { 35 dev_err(&pdev->dev, "memory resource not found\n"); 36 return -EINVAL; 37 } 38 > 39 sio_base = devm_ioremap(&pdev->dev, res->start, resource_size(res)); > 40 if (!sio_base) { 41 dev_err(&pdev->dev, "devm_ioremap error\n"); 42 return -ENOMEM; 43 } 44 45 data = devm_kcalloc(&pdev->dev, 1, 46 sizeof(struct it8768e_data), 47 GFP_KERNEL); 48 if (!data) { 49 dev_err(&pdev->dev, "Failed to alloc private mem struct.\n"); 50 return -ENOMEM; 51 } 52 53 spin_lock_init(&data->uart.port.lock); 54 data->uart.port.dev = &pdev->dev; 55 data->uart.port.regshift = 0; 56 data->uart.port.iotype = UPIO_MEM; 57 data->uart.port.type = PORT_16550A; > 58 data->uart.port.membase = sio_base; 59 data->uart.port.mapbase = res->start; 60 data->uart.port.uartclk = 1843200; 61 data->uart.port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_SKIP_TEST; 62 63 data->line = serial8250_register_8250_port(&data->uart); 64 if (data->line < 0) { 65 dev_err(&pdev->dev, 66 "unable to resigter 8250 port (MEM%llx): %d\n", 67 (unsigned long long)res->start, 0); 68 return data->line; 69 } 70 71 dev_set_drvdata(&pdev->dev, data); 72 return 0; 73 } 74 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
