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crypto: ecc - Silence sparse warning

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Rewrite the bitwise operations to silence the sparse warnings:

  CHECK   ../crypto/ecc.c
../crypto/ecc.c:1387:39: warning: dubious: !x | y
../crypto/ecc.c:1397:47: warning: dubious: !x | y

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Vitaly Chikunov <vt@altlinux.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-02-06 12:53:38 +08:00
parent d3777ceaad
commit 5072b1c211
1 changed files with 4 additions and 2 deletions
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6
crypto/ecc.c
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@ -1384,7 +1384,8 @@ void ecc_point_mult_shamir(const struct ecc_point *result,
num_bits = max(vli_num_bits(u1, ndigits), vli_num_bits(u2, ndigits));
i = num_bits - 1;
idx = (!!vli_test_bit(u1, i)) | ((!!vli_test_bit(u2, i)) << 1);
idx = !!vli_test_bit(u1, i);
idx |= (!!vli_test_bit(u2, i)) << 1;
point = points[idx];
vli_set(rx, point->x, ndigits);
@ -1394,7 +1395,8 @@ void ecc_point_mult_shamir(const struct ecc_point *result,
for (--i; i >= 0; i--) {
ecc_point_double_jacobian(rx, ry, z, curve);
idx = (!!vli_test_bit(u1, i)) | ((!!vli_test_bit(u2, i)) << 1);
idx = !!vli_test_bit(u1, i);
idx |= (!!vli_test_bit(u2, i)) << 1;
point = points[idx];
if (point) {
u64 tx[ECC_MAX_DIGITS];