[kbuild-all] drivers/tty/serial/8250/8250_dwlib.c:45:17: sparse: sparse: incorrect type in argument 1 (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 1b5044021070efa3259f3e9548dc35d1eb6aa844 commit: 4d5675c3b10b7bfa56447c26c29930e35b6d41ee serial: 8250_dw: switch to use 8250_dwlib library date: 10 months ago config: alpha-randconfig-s032-20200618 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-10-gc17b1b06-dirty git checkout 4d5675c3b10b7bfa56447c26c29930e35b6d41ee # save the attached .config to linux build tree make W=1 C=1 ARCH=alpha CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/tty/serial/8250/8250_dwlib.c:45:17: sparse: got restricted __be32 [usertype] arch/alpha/include/uapi/asm/swab.h:29:14: sparse: sparse: undefined identifier '__builtin_alpha_inslh' arch/alpha/include/uapi/asm/swab.h:30:14: sparse: sparse: undefined identifier '__builtin_alpha_inswl' arch/alpha/include/uapi/asm/swab.h:29:14: sparse: sparse: not a function <noident> arch/alpha/include/uapi/asm/swab.h:30:14: sparse: sparse: not a function <noident> arch/alpha/include/uapi/asm/swab.h:29:14: sparse: sparse: not a function <noident> arch/alpha/include/uapi/asm/swab.h:30:14: sparse: sparse: not a function <noident> arch/alpha/include/asm/bitops.h:380:13: sparse: sparse: undefined identifier '__builtin_alpha_cmpbge' arch/alpha/include/asm/bitops.h:382:13: sparse: sparse: undefined identifier '__builtin_alpha_extbl' arch/alpha/include/uapi/asm/swab.h:29:14: sparse: sparse: not a function <noident> arch/alpha/include/uapi/asm/swab.h:30:14: sparse: sparse: not a function <noident> vim +45 drivers/tty/serial/8250/8250_dwlib.c 136e0ab99b2237 Andy Shevchenko 2019-08-06 41 136e0ab99b2237 Andy Shevchenko 2019-08-06 42 static inline void dw8250_writel_ext(struct uart_port *p, int offset, u32 reg) 136e0ab99b2237 Andy Shevchenko 2019-08-06 43 { 136e0ab99b2237 Andy Shevchenko 2019-08-06 44 if (p->iotype == UPIO_MEM32BE) 136e0ab99b2237 Andy Shevchenko 2019-08-06 @45 iowrite32be(reg, p->membase + offset); 136e0ab99b2237 Andy Shevchenko 2019-08-06 46 else 136e0ab99b2237 Andy Shevchenko 2019-08-06 47 writel(reg, p->membase + offset); 136e0ab99b2237 Andy Shevchenko 2019-08-06 48 } 136e0ab99b2237 Andy Shevchenko 2019-08-06 49 :::::: The code at line 45 was first introduced by commit :::::: 136e0ab99b22378e3ff7d54f799a3a329316e869 serial: 8250_dw: split Synopsys DesignWare 8250 common functions :::::: TO: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org