From: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com> --- lib/bch.c | 14 +------------- 1 file changed, 1 insertion(+), 13 deletions(-)
diff --git a/lib/bch.c b/lib/bch.c index bc89dfe4..6c6e8d4 100644 --- a/lib/bch.c +++ b/lib/bch.c @@ -278,18 +278,6 @@ static inline int deg(unsigned int poly) return fls(poly)-1; } -static inline int parity(unsigned int x) -{ - /* - * public domain code snippet, lifted from - * http://www-graphics.stanford.edu/~seander/bithacks.html - */ - x ^= x >> 1; - x ^= x >> 2; - x = (x & 0x11111111U) * 0x11111111U; - return (x >> 28) & 1; -} - /* Galois field basic operations: multiply, divide, inverse, etc. */ static inline unsigned int gf_mul(struct bch_control *bch, unsigned int a, @@ -494,7 +482,7 @@ static int solve_linear_system(struct bch_control *bch, unsigned int *rows, tmp = 0; for (r = m-1; r >= 0; r--) { mask = rows[r] & (tmp|1); - tmp |= parity(mask) << (m-r); + tmp |= parity32(mask) << (m-r); } sol[p] = tmp >> 1; } -- 2.5.5