tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing head: 7e9e6c1f446cf98e5e59d065f43428a9e1046fed commit: ad7d1f21825e7513f2fcfe6b8d21f8c365050c34 [68/80] serial: 8250_pci: Add support for Sunix serial boards config: parisc-c3000_defconfig (attached as .config) compiler: hppa-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout ad7d1f21825e7513f2fcfe6b8d21f8c365050c34 # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=parisc If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from ./arch/parisc/include/generated/asm/div64.h:1:0, from include/linux/kernel.h:18, from include/linux/list.h:9, from include/linux/module.h:9, from drivers/tty/serial/8250/8250_pci.c:10: drivers/tty/serial/8250/8250_pci.c: In function 'pci_sunix_setup': include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ >> drivers/tty/serial/8250/8250_pci.c:1823:12: note: in expansion of macro 'do_div' offset = do_div(idx, 4); ^~~~~~ In file included from include/linux/kernel.h:11:0, from include/linux/list.h:9, from include/linux/module.h:9, from drivers/tty/serial/8250/8250_pci.c:10: include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow] } else if (likely(((n) >> 32) == 0)) { \ ^ include/linux/compiler.h:77:40: note: in definition of macro 'likely' # define likely(x) __builtin_expect(!!(x), 1) ^ >> drivers/tty/serial/8250/8250_pci.c:1823:12: note: in expansion of macro 'do_div' offset = do_div(idx, 4); ^~~~~~ In file included from ./arch/parisc/include/generated/asm/div64.h:1:0, from include/linux/kernel.h:18, from include/linux/list.h:9, from include/linux/module.h:9, from drivers/tty/serial/8250/8250_pci.c:10: include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types] __rem = __div64_32(&(n), __base); \ ^ >> drivers/tty/serial/8250/8250_pci.c:1823:12: note: in expansion of macro 'do_div' offset = do_div(idx, 4); ^~~~~~ include/asm-generic/div64.h:213:17: note: expected 'uint64_t * {aka long long unsigned int *}' but argument is of type 'int *' extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor); ^~~~~~~~~~ cc1: some warnings being treated as errors vim +/do_div +1823 drivers/tty/serial/8250/8250_pci.c 1805 1806 static int 1807 pci_sunix_setup(struct serial_private *priv, 1808 const struct pciserial_board *board, 1809 struct uart_8250_port *port, int idx) 1810 { 1811 int bar; 1812 int offset; 1813 1814 port->port.flags |= UPF_FIXED_TYPE; 1815 port->port.type = PORT_SUNIX; 1816 1817 if (idx < 4) { 1818 bar = 0; 1819 offset = idx * board->uart_offset; 1820 } else { 1821 bar = 1; 1822 idx -= 4; > 1823 offset = do_div(idx, 4); 1824 offset = idx * 64 + offset * board->uart_offset; 1825 } 1826 1827 return setup_port(priv, port, bar, offset, 0); 1828 } 1829 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
Attachment:
.config.gz
Description: application/gzip
