Hi Fabio, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: c6b11acc5f85b6e11d128fad8e0b7b223aa7e33f commit: 5f1697fee6f6758ec1001569ae26d7a70a8bbc8e [8629/9613] serial: mxs-auart: Remove unneeded platform_device_id config: powerpc-randconfig-r006-20201130 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project dfcf1acf13226be0f599a7ab6b395b66dc9545d6) 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 # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=5f1697fee6f6758ec1001569ae26d7a70a8bbc8e git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 5f1697fee6f6758ec1001569ae26d7a70a8bbc8e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/tty/serial/mxs-auart.c:1656:15: warning: cast to smaller integer type 'enum mxs_auart_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] s->devtype = (enum mxs_auart_type)of_device_get_match_data(&pdev->dev); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. vim +1656 drivers/tty/serial/mxs-auart.c 1631 1632 static int mxs_auart_probe(struct platform_device *pdev) 1633 { 1634 struct mxs_auart_port *s; 1635 u32 version; 1636 int ret, irq; 1637 struct resource *r; 1638 1639 s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL); 1640 if (!s) 1641 return -ENOMEM; 1642 1643 s->port.dev = &pdev->dev; 1644 s->dev = &pdev->dev; 1645 1646 ret = serial_mxs_probe_dt(s, pdev); 1647 if (ret > 0) 1648 s->port.line = pdev->id < 0 ? 0 : pdev->id; 1649 else if (ret < 0) 1650 return ret; 1651 if (s->port.line >= ARRAY_SIZE(auart_port)) { 1652 dev_err(&pdev->dev, "serial%d out of range\n", s->port.line); 1653 return -EINVAL; 1654 } 1655 > 1656 s->devtype = (enum mxs_auart_type)of_device_get_match_data(&pdev->dev); 1657 1658 ret = mxs_get_clks(s, pdev); 1659 if (ret) 1660 return ret; 1661 1662 r = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1663 if (!r) { 1664 ret = -ENXIO; 1665 goto out_disable_clks; 1666 } 1667 1668 s->port.mapbase = r->start; 1669 s->port.membase = ioremap(r->start, resource_size(r)); 1670 if (!s->port.membase) { 1671 ret = -ENOMEM; 1672 goto out_disable_clks; 1673 } 1674 s->port.ops = &mxs_auart_ops; 1675 s->port.iotype = UPIO_MEM; 1676 s->port.fifosize = MXS_AUART_FIFO_SIZE; 1677 s->port.uartclk = clk_get_rate(s->clk); 1678 s->port.type = PORT_IMX; 1679 s->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_MXS_AUART_CONSOLE); 1680 1681 mxs_init_regs(s); 1682 1683 s->mctrl_prev = 0; 1684 1685 irq = platform_get_irq(pdev, 0); 1686 if (irq < 0) { 1687 ret = irq; 1688 goto out_iounmap; 1689 } 1690 1691 s->port.irq = irq; 1692 ret = devm_request_irq(&pdev->dev, irq, mxs_auart_irq_handle, 0, 1693 dev_name(&pdev->dev), s); 1694 if (ret) 1695 goto out_iounmap; 1696 1697 platform_set_drvdata(pdev, s); 1698 1699 ret = mxs_auart_init_gpios(s, &pdev->dev); 1700 if (ret) { 1701 dev_err(&pdev->dev, "Failed to initialize GPIOs.\n"); 1702 goto out_iounmap; 1703 } 1704 1705 /* 1706 * Get the GPIO lines IRQ 1707 */ 1708 ret = mxs_auart_request_gpio_irq(s); 1709 if (ret) 1710 goto out_iounmap; 1711 1712 auart_port[s->port.line] = s; 1713 1714 mxs_auart_reset_deassert(s); 1715 1716 ret = uart_add_one_port(&auart_driver, &s->port); 1717 if (ret) 1718 goto out_free_qpio_irq; 1719 1720 /* ASM9260 don't have version reg */ 1721 if (is_asm9260_auart(s)) { 1722 dev_info(&pdev->dev, "Found APPUART ASM9260\n"); 1723 } else { 1724 version = mxs_read(s, REG_VERSION); 1725 dev_info(&pdev->dev, "Found APPUART %d.%d.%d\n", 1726 (version >> 24) & 0xff, 1727 (version >> 16) & 0xff, version & 0xffff); 1728 } 1729 1730 return 0; 1731 1732 out_free_qpio_irq: 1733 mxs_auart_free_gpio_irq(s); 1734 auart_port[pdev->id] = NULL; 1735 1736 out_iounmap: 1737 iounmap(s->port.membase); 1738 1739 out_disable_clks: 1740 if (is_asm9260_auart(s)) { 1741 clk_disable_unprepare(s->clk); 1742 clk_disable_unprepare(s->clk_ahb); 1743 } 1744 return ret; 1745 } 1746 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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