tree: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next head: a65a1ec70639afa5ff7990cf33213dd41f3c7176 commit: edecc785996030331a83dddaeee960ab9302c608 [69/89] usb: dwc3: Add support for DWC_usb32 IP config: microblaze-randconfig-s002-20200520 (attached as .config) reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty git checkout edecc785996030331a83dddaeee960ab9302c608 # save the attached .config to linux build tree make C=1 ARCH=microblaze CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from drivers/usb/dwc3/debug.h:14, from drivers/usb/dwc3/gadget.c:25: drivers/usb/dwc3/gadget.c: In function 'dwc3_gadget_run_stop': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 1413 | dwc->revision >= _ip##_REVISION_##_from && | ^~ 1885 | if (DWC3_VER_IS_WITHIN(DWC3, ANY, 187A)) { | ^~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/gadget.c: In function 'dwc3_gadget_conndone_interrupt': drivers/usb/dwc3/core.h:1413:17: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 1413 | dwc->revision >= _ip##_REVISION_##_from && | ^~ drivers/usb/dwc3/gadget.c:3025:7: note: in expansion of macro 'DWC3_VER_IS_WITHIN' 3025 | if (!DWC3_VER_IS_WITHIN(DWC3, ANY, 194A) && | ^~~~~~~~~~~~~~~~~~ vim +/DWC3_VER_IS_WITHIN +1885 drivers/usb/dwc3/gadget.c 1874 1875 static int dwc3_gadget_run_stop(struct dwc3 *dwc, int is_on, int suspend) 1876 { 1877 u32 reg; 1878 u32 timeout = 500; 1879 1880 if (pm_runtime_suspended(dwc->dev)) 1881 return 0; 1882 1883 reg = dwc3_readl(dwc->regs, DWC3_DCTL); 1884 if (is_on) { 1886 reg &= ~DWC3_DCTL_TRGTULST_MASK; 1887 reg |= DWC3_DCTL_TRGTULST_RX_DET; 1888 } 1889 1890 if (!DWC3_VER_IS_PRIOR(DWC3, 194A)) 1891 reg &= ~DWC3_DCTL_KEEP_CONNECT; 1892 reg |= DWC3_DCTL_RUN_STOP; 1893 1894 if (dwc->has_hibernation) 1895 reg |= DWC3_DCTL_KEEP_CONNECT; 1896 1897 dwc->pullups_connected = true; 1898 } else { 1899 reg &= ~DWC3_DCTL_RUN_STOP; 1900 1901 if (dwc->has_hibernation && !suspend) 1902 reg &= ~DWC3_DCTL_KEEP_CONNECT; 1903 1904 dwc->pullups_connected = false; 1905 } 1906 1907 dwc3_gadget_dctl_write_safe(dwc, reg); 1908 1909 do { 1910 reg = dwc3_readl(dwc->regs, DWC3_DSTS); 1911 reg &= DWC3_DSTS_DEVCTRLHLT; 1912 } while (--timeout && !(!is_on ^ !reg)); 1913 1914 if (!timeout) 1915 return -ETIMEDOUT; 1916 1917 return 0; 1918 } 1919 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org