[intel-tdx:guest 27/82] arch/x86/mm/mem_encrypt_common.c:14:6: warning: no previous prototype for 'force_dma_unencrypted'

[intel-tdx:guest 27/82] arch/x86/mm/mem_encrypt_common.c:14:6: warning: no previous prototype for 'force_dma_unencrypted'

[kernel test robot]

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tree:   https://github.com/intel/tdx.git guest
head:   91267ba66f659be1be6cda5e8dab9a6bb52d223c
commit: 41aae88f875fd9d4a8d5fbf90a6043a724b81ee0 [27/82] x86/mm: Move force_dma_unencrypted() to common code
config: x86_64-randconfig-r024-20210622 (attached as .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/41aae88f875fd9d4a8d5fbf90a6043a724b81ee0
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 41aae88f875fd9d4a8d5fbf90a6043a724b81ee0
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

>> arch/x86/mm/mem_encrypt_common.c:14:6: warning: no previous prototype for 'force_dma_unencrypted' [-Wmissing-prototypes]
      14 | bool force_dma_unencrypted(struct device *dev)
         |      ^~~~~~~~~~~~~~~~~~~~~


vim +/force_dma_unencrypted +14 arch/x86/mm/mem_encrypt_common.c

    12	
    13	/* Override for DMA direct allocation check - ARCH_HAS_FORCE_DMA_UNENCRYPTED */
  > 14	bool force_dma_unencrypted(struct device *dev)

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

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