[intel-tdx:tdx/guest-rebased 108/133] arch/x86/kernel/tdx.c:692:15: warning: no previous prototype for 'tdx_mmio_readq'

[kernel test robot]

tree:   https://github.com/intel/tdx.git tdx/guest-rebased
head:   e3995864d37c56f431c93fc3dc454d9c65f5e9ea
commit: 756e9ea1c2ce5a460d5e3edc980255eea5f0fecf [108/133] x86/tdx: Enable direct iomap MMIO optimizations
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220114/202201140431.dg81It8G-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel/tdx/commit/756e9ea1c2ce5a460d5e3edc980255eea5f0fecf
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx tdx/guest-rebased
        git checkout 756e9ea1c2ce5a460d5e3edc980255eea5f0fecf
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   arch/x86/kernel/tdx.c:268:5: warning: no previous prototype for 'tdx_hcall_set_notify_intr' [-Wmissing-prototypes]
     268 | int tdx_hcall_set_notify_intr(u8 vector)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/kernel/tdx.c:509:14: warning: no previous prototype for 'tdx_write_msr' [-Wmissing-prototypes]
     509 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
         |              ^~~~~~~~~~~~~
>> arch/x86/kernel/tdx.c:692:15: warning: no previous prototype for 'tdx_mmio_readq' [-Wmissing-prototypes]
     692 | unsigned long tdx_mmio_readq(void __iomem *addr)
         |               ^~~~~~~~~~~~~~


vim +/tdx_mmio_readq +692 arch/x86/kernel/tdx.c

   691	
 > 692	unsigned long tdx_mmio_readq(void __iomem *addr)
   693	{
   694		unsigned long val;
   695	
   696		if (tdx_virt_mmio(8, false, (unsigned long)addr, &val))
   697			return 0xffffffffffffffff;
   698		return val;
   699	}
   700	

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