[l1k:spdm-future 16/34] include/crypto/internal/ecc.h:74:34: sparse: sparse: cast to restricted __be64

[l1k:spdm-future 16/34] include/crypto/internal/ecc.h:74:34: sparse: sparse: cast to restricted __be64

[kernel test robot]

tree:   https://github.com/l1k/linux spdm-future
head:   fde830bd8ee973e5acff536fac518cf4bdb59714
commit: 27df155f5889562ed6dad1352b9c84b4006907e1 [16/34] crypto: ecdsa - Convert byte arrays with key coordinates to digits
config: x86_64-randconfig-121-20240305 (https://download.01.org/0day-ci/archive/20240308/202403080559.b0unHTFI-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240308/202403080559.b0unHTFI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403080559.b0unHTFI-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   crypto/ecdsa.c: note: in included file:
>> include/crypto/internal/ecc.h:74:34: sparse: sparse: cast to restricted __be64
>> include/crypto/internal/ecc.h:74:34: sparse: sparse: cast to restricted __be64

vim +74 include/crypto/internal/ecc.h

    58	
    59	/**
    60	 * ecc_digits_from_bytes() - Create ndigits-sized digits array from byte array
    61	 * @in:       Input byte array
    62	 * @nbytes    Size of input byte array
    63	 * @out       Output digits array
    64	 * @ndigits:  Number of digits to create from byte array
    65	 */
    66	static inline void ecc_digits_from_bytes(const u8 *in, unsigned int nbytes,
    67						 u64 *out, unsigned int ndigits)
    68	{
    69		unsigned int o = nbytes & 7;
    70		u64 msd = 0;
    71	
    72		if (o) {
    73			memcpy((u8 *)&msd + sizeof(msd) - o, in, o);
  > 74			out[--ndigits] = be64_to_cpu(msd);
    75			in += o;
    76		}
    77		ecc_swap_digits(in, out, ndigits);
    78	}
    79	

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