[kbuild-all] [xlnx:xlnx_rebase_v5.4 935/1697] drivers/usb/dwc3/core.h:1459:6: warning: no previous prototype for 'dwc3_mask_phy_reset'

tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4 head: 629150468791671b5fde21363e643e87c5815b17 commit: 128feece434d1c02d2dfac7e4103b2c73b6afb27 [935/1697] usb: dwc3: Add support for masking phy reset signal config: m68k-randconfig-r013-20210112 (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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 # https://github.com/Xilinx/linux-xlnx/commit/128feece434d1c02d2dfac7e4103b... git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx xlnx_rebase_v5.4 git checkout 128feece434d1c02d2dfac7e4103b2c73b6afb27 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from include/linux/ioport.h:13, from include/linux/device.h:15, from include/linux/platform_device.h:13, from drivers/usb/dwc3/host.c:10: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra] 33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from drivers/usb/dwc3/host.c:14: drivers/usb/dwc3/core.h: At top level: drivers/usb/dwc3/core.h:1451:6: warning: no previous prototype for 'dwc3_simple_wakeup_capable' [-Wmissing-prototypes] 1451 | void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1453:6: warning: no previous prototype for 'dwc3_set_simple_data' [-Wmissing-prototypes] 1453 | void dwc3_set_simple_data(struct dwc3 *dwc) | ^~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1455:6: warning: no previous prototype for 'dwc3_simple_check_quirks' [-Wmissing-prototypes] 1455 | void dwc3_simple_check_quirks(struct dwc3 *dwc) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1457:5: warning: no previous prototype for 'dwc3_set_usb_core_power' [-Wmissing-prototypes] 1457 | int dwc3_set_usb_core_power(struct dwc3 *dwc, bool on) | ^~~~~~~~~~~~~~~~~~~~~~~ 1459 | void dwc3_mask_phy_reset(struct device *dev, bool mask) | ^~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h: In function 'dwc3_set_usb_core_power': drivers/usb/dwc3/core.h:1458:1: warning: control reaches end of non-void function [-Wreturn-type] 1458 | { ; } | ^ -- In file included from include/linux/err.h:5, from include/linux/clk.h:12, from drivers/usb/dwc3/core.c:11: include/linux/scatterlist.h: In function 'sg_set_buf': arch/m68k/include/asm/page_no.h:33:50: warning: ordered comparison of pointer with null pointer [-Wextra] 33 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ^~ include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' 78 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ In file included from drivers/usb/dwc3/core.c:36: drivers/usb/dwc3/core.h: At top level: drivers/usb/dwc3/core.h:1451:6: warning: no previous prototype for 'dwc3_simple_wakeup_capable' [-Wmissing-prototypes] 1451 | void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1453:6: warning: no previous prototype for 'dwc3_set_simple_data' [-Wmissing-prototypes] 1453 | void dwc3_set_simple_data(struct dwc3 *dwc) | ^~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1455:6: warning: no previous prototype for 'dwc3_simple_check_quirks' [-Wmissing-prototypes] 1455 | void dwc3_simple_check_quirks(struct dwc3 *dwc) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.h:1457:5: warning: no previous prototype for 'dwc3_set_usb_core_power' [-Wmissing-prototypes] 1457 | int dwc3_set_usb_core_power(struct dwc3 *dwc, bool on) | ^~~~~~~~~~~~~~~~~~~~~~~ 1459 | void dwc3_mask_phy_reset(struct device *dev, bool mask) | ^~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.c:386:6: warning: no previous prototype for 'dwc3_free_event_buffers' [-Wmissing-prototypes] 386 | void dwc3_free_event_buffers(struct dwc3 *dwc) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.c:403:5: warning: no previous prototype for 'dwc3_alloc_event_buffers' [-Wmissing-prototypes] 403 | int dwc3_alloc_event_buffers(struct dwc3 *dwc, unsigned length) | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/usb/dwc3/core.c:977:5: warning: no previous prototype for 'dwc3_core_init' [-Wmissing-prototypes] 977 | int dwc3_core_init(struct dwc3 *dwc) | ^~~~~~~~~~~~~~ In file included from drivers/usb/dwc3/core.c:36: drivers/usb/dwc3/core.h: In function 'dwc3_set_usb_core_power': drivers/usb/dwc3/core.h:1458:1: warning: control reaches end of non-void function [-Wreturn-type] 1458 | { ; } | ^ vim +/dwc3_mask_phy_reset +1459 drivers/usb/dwc3/core.h 1440 1441 #if IS_ENABLED(CONFIG_USB_DWC3_OF_SIMPLE) 1442 int dwc3_enable_hw_coherency(struct device *dev); 1443 void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup); 1444 void dwc3_set_simple_data(struct dwc3 *dwc); 1445 void dwc3_simple_check_quirks(struct dwc3 *dwc); 1446 int dwc3_set_usb_core_power(struct dwc3 *dwc, bool on); 1447 void dwc3_mask_phy_reset(struct device *dev, bool mask); 1448 #else 1449 static inline int dwc3_enable_hw_coherency(struct device *dev) 1450 { return 1; } 1451 void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup) 1452 { ; } 1453 void dwc3_set_simple_data(struct dwc3 *dwc) 1454 { ; } 1455 void dwc3_simple_check_quirks(struct dwc3 *dwc) 1456 { ; } 1457 int dwc3_set_usb_core_power(struct dwc3 *dwc, bool on) 1458 { ; } 1460 { ; } 1461 #endif 1462 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org