[xlnx:xlnx_rebase_v5.4 906/1697] drivers/usb/dwc3/core.h:1433:6: warning: no previous prototype for 'dwc3_simple_check_quirks'

[kernel test robot]

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4
head:   629150468791671b5fde21363e643e87c5815b17
commit: 782658c51bbcd85a39a5d9a51b57224f185d7670 [906/1697] usb: dwc3: Correct errors when dwc3 loaded as module
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/782658c51bbcd85a39a5d9a51b57224f185d7670
        git remote add xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xlnx xlnx_rebase_v5.4
        git checkout 782658c51bbcd85a39a5d9a51b57224f185d7670
        # 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 at intel.com>

All warnings (new ones prefixed by >>):

   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:1429:6: warning: no previous prototype for 'dwc3_simple_wakeup_capable' [-Wmissing-prototypes]
    1429 | void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/usb/dwc3/core.h:1431:6: warning: no previous prototype for 'dwc3_set_simple_data' [-Wmissing-prototypes]
    1431 | void dwc3_set_simple_data(struct dwc3 *dwc)
         |      ^~~~~~~~~~~~~~~~~~~~
>> drivers/usb/dwc3/core.h:1433:6: warning: no previous prototype for 'dwc3_simple_check_quirks' [-Wmissing-prototypes]
    1433 | void dwc3_simple_check_quirks(struct dwc3 *dwc)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/dwc3_simple_check_quirks +1433 drivers/usb/dwc3/core.h

  1420	
  1421	#if IS_ENABLED(CONFIG_USB_DWC3_OF_SIMPLE)
  1422	int dwc3_enable_hw_coherency(struct device *dev);
  1423	void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup);
  1424	void dwc3_set_simple_data(struct dwc3 *dwc);
  1425	void dwc3_simple_check_quirks(struct dwc3 *dwc);
  1426	#else
  1427	static inline int dwc3_enable_hw_coherency(struct device *dev)
  1428	{ return 1; }
> 1429	void dwc3_simple_wakeup_capable(struct device *dev, bool wakeup)
  1430	{ ; }
  1431	void dwc3_set_simple_data(struct dwc3 *dwc)
  1432	{ ; }
> 1433	void dwc3_simple_check_quirks(struct dwc3 *dwc)
  1434	{ ; }
  1435	#endif
  1436	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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