tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: fa903833ae344e4f4d798a8b85ba3ef0c5ce96c9 commit: 4dec5f1af694526db760dfbb47211236e556e27c [2190/5053] tty: serial: pch_uart.c: remove debugfs dentry pointer config: powerpc64-randconfig-r024-20210317 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8ef111222a3dd12a9175f69c3bff598c46e8bdf7) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... 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 4dec5f1af694526db760dfbb47211236e556e27c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): &port_regs_ops); ^ 1 error generated. vim +/port_regs_ops +1815 drivers/tty/serial/pch_uart.c 1725 1726 static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, 1727 const struct pci_device_id *id) 1728 { 1729 struct eg20t_port *priv; 1730 int ret; 1731 unsigned int iobase; 1732 unsigned int mapbase; 1733 unsigned char *rxbuf; 1734 int fifosize; 1735 int port_type; 1736 struct pch_uart_driver_data *board; 1737 char name[32]; 1738 1739 board = &drv_dat[id->driver_data]; 1740 port_type = board->port_type; 1741 1742 priv = kzalloc(sizeof(struct eg20t_port), GFP_KERNEL); 1743 if (priv == NULL) 1744 goto init_port_alloc_err; 1745 1746 rxbuf = (unsigned char *)__get_free_page(GFP_KERNEL); 1747 if (!rxbuf) 1748 goto init_port_free_txbuf; 1749 1750 switch (port_type) { 1751 case PORT_PCH_8LINE: 1752 fifosize = 256; /* EG20T/ML7213: UART0 */ 1753 break; 1754 case PORT_PCH_2LINE: 1755 fifosize = 64; /* EG20T:UART1~3 ML7213: UART1~2*/ 1756 break; 1757 default: 1758 dev_err(&pdev->dev, "Invalid Port Type(=%d)\n", port_type); 1759 goto init_port_hal_free; 1760 } 1761 1762 pci_enable_msi(pdev); 1763 pci_set_master(pdev); 1764 1765 spin_lock_init(&priv->lock); 1766 1767 iobase = pci_resource_start(pdev, 0); 1768 mapbase = pci_resource_start(pdev, 1); 1769 priv->mapbase = mapbase; 1770 priv->iobase = iobase; 1771 priv->pdev = pdev; 1772 priv->tx_empty = 1; 1773 priv->rxbuf.buf = rxbuf; 1774 priv->rxbuf.size = PAGE_SIZE; 1775 1776 priv->fifo_size = fifosize; 1777 priv->uartclk = pch_uart_get_uartclk(); 1778 priv->port_type = port_type; 1779 priv->port.dev = &pdev->dev; 1780 priv->port.iobase = iobase; 1781 priv->port.membase = NULL; 1782 priv->port.mapbase = mapbase; 1783 priv->port.irq = pdev->irq; 1784 priv->port.iotype = UPIO_PORT; 1785 priv->port.ops = &pch_uart_ops; 1786 priv->port.flags = UPF_BOOT_AUTOCONF; 1787 priv->port.fifosize = fifosize; 1788 priv->port.line = board->line_no; 1789 priv->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_PCH_UART_CONSOLE); 1790 priv->trigger = PCH_UART_HAL_TRIGGER_M; 1791 1792 snprintf(priv->irq_name, IRQ_NAME_SIZE, 1793 KBUILD_MODNAME ":" PCH_UART_DRIVER_DEVICE "%d", 1794 priv->port.line); 1795 1796 spin_lock_init(&priv->port.lock); 1797 1798 pci_set_drvdata(pdev, priv); 1799 priv->trigger_level = 1; 1800 priv->fcr = 0; 1801 1802 if (pdev->dev.of_node) 1803 of_property_read_u32(pdev->dev.of_node, "clock-frequency" 1804 , &user_uartclk); 1805 1806 #ifdef CONFIG_SERIAL_PCH_UART_CONSOLE 1807 pch_uart_ports[board->line_no] = priv; 1808 #endif 1809 ret = uart_add_one_port(&pch_uart_driver, &priv->port); 1810 if (ret < 0) 1811 goto init_port_hal_free; 1812 1813 snprintf(name, sizeof(name), "uart%d_regs", priv->port.line); 1814 debugfs_create_file(name, S_IFREG | S_IRUGO, NULL, priv, 1816 1817 return priv; 1818 1819 init_port_hal_free: 1820 #ifdef CONFIG_SERIAL_PCH_UART_CONSOLE 1821 pch_uart_ports[board->line_no] = NULL; 1822 #endif 1823 free_page((unsigned long)rxbuf); 1824 init_port_free_txbuf: 1825 kfree(priv); 1826 init_port_alloc_err: 1827 1828 return NULL; 1829 } 1830 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org