[intel-tdx:guest 108/144] arch/x86/kernel/tdx.c:714:15: warning: no previous prototype for 'tdx_mmio_readq'

[kernel test robot]

tree:   https://github.com/intel/tdx.git guest
head:   41fe88a1b3c28543f49fa6ed9e0e9b6650ed7614
commit: e429db7ac5ebc20d80a407ff29424e5bb710d057 [108/144] x86/tdx: Enable direct iomap MMIO optimizations
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20211208/202112080635.7JcdsSvJ-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/e429db7ac5ebc20d80a407ff29424e5bb710d057
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout e429db7ac5ebc20d80a407ff29424e5bb710d057
        # 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:269:5: warning: no previous prototype for 'tdx_hcall_set_notify_intr' [-Wmissing-prototypes]
     269 | int tdx_hcall_set_notify_intr(u8 vector)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/kernel/tdx.c:492:14: warning: no previous prototype for 'tdx_write_msr' [-Wmissing-prototypes]
     492 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
         |              ^~~~~~~~~~~~~
>> arch/x86/kernel/tdx.c:714:15: warning: no previous prototype for 'tdx_mmio_readq' [-Wmissing-prototypes]
     714 | unsigned long tdx_mmio_readq(void __iomem *addr)
         |               ^~~~~~~~~~~~~~


vim +/tdx_mmio_readq +714 arch/x86/kernel/tdx.c

   713	
 > 714	unsigned long tdx_mmio_readq(void __iomem *addr)
   715	{
   716		unsigned long val;
   717	
   718		if (tdx_virt_mmio(8, false, (unsigned long)addr, &val))
   719			return 0xffffffffffffffff;
   720		return val;
   721	}
   722	

---
0-DAY CI Kernel Test Service, Intel Corporation
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