115 	struct gf_poly poly;  member
315 static inline int deg(unsigned int poly)  in deg()  argument
318 	return fls(poly)-1;  in deg()
382 	uint32_t poly;  in compute_syndromes()  local
395 		poly = *ecc++;  in compute_syndromes()
397 		while (poly) {  in compute_syndromes()
398 			i = deg(poly);  in compute_syndromes()
402 			poly ^= (1 << i);  in compute_syndromes()
585 static int find_poly_deg1_roots(struct bch_control *bch, struct gf_poly *poly,  in find_poly_deg1_roots()  argument
590 	if (poly->c[0])  in find_poly_deg1_roots()
592 		roots[n++] = mod_s(bch, GF_N(bch)-bch->a_log_tab[poly->c[0]]+  in find_poly_deg1_roots()
593 				   bch->a_log_tab[poly->c[1]]);  in find_poly_deg1_roots()
600 static int find_poly_deg2_roots(struct bch_control *bch, struct gf_poly *poly,  in find_poly_deg2_roots()  argument
606 	if (poly->c[0] && poly->c[1]) {  in find_poly_deg2_roots()
608 		l0 = bch->a_log_tab[poly->c[0]];  in find_poly_deg2_roots()
609 		l1 = bch->a_log_tab[poly->c[1]];  in find_poly_deg2_roots()
610 		l2 = bch->a_log_tab[poly->c[2]];  in find_poly_deg2_roots()
642 static int find_poly_deg3_roots(struct bch_control *bch, struct gf_poly *poly,  in find_poly_deg3_roots()  argument
648 	if (poly->c[0]) {  in find_poly_deg3_roots()
650 		e3 = poly->c[3];  in find_poly_deg3_roots()
651 		c2 = gf_div(bch, poly->c[0], e3);  in find_poly_deg3_roots()
652 		b2 = gf_div(bch, poly->c[1], e3);  in find_poly_deg3_roots()
653 		a2 = gf_div(bch, poly->c[2], e3);  in find_poly_deg3_roots()
675 static int find_poly_deg4_roots(struct bch_control *bch, struct gf_poly *poly,  in find_poly_deg4_roots()  argument
681 	if (poly->c[0] == 0)  in find_poly_deg4_roots()
685 	e4 = poly->c[4];  in find_poly_deg4_roots()
686 	d = gf_div(bch, poly->c[0], e4);  in find_poly_deg4_roots()
687 	c = gf_div(bch, poly->c[1], e4);  in find_poly_deg4_roots()
688 	b = gf_div(bch, poly->c[2], e4);  in find_poly_deg4_roots()
689 	a = gf_div(bch, poly->c[3], e4);  in find_poly_deg4_roots()
903 			*h = &((struct gf_poly_deg1 *)f)[gcd->deg].poly;  in factor_polynomial()
915 			   struct gf_poly *poly, unsigned int *roots)  in find_poly_roots()  argument
920 	switch (poly->deg) {  in find_poly_roots()
923 		cnt = find_poly_deg1_roots(bch, poly, roots);  in find_poly_roots()
926 		cnt = find_poly_deg2_roots(bch, poly, roots);  in find_poly_roots()
929 		cnt = find_poly_deg3_roots(bch, poly, roots);  in find_poly_roots()
932 		cnt = find_poly_deg4_roots(bch, poly, roots);  in find_poly_roots()
937 		if (poly->deg && (k <= GF_M(bch))) {  in find_poly_roots()
938 			factor_polynomial(bch, k, poly, &f1, &f2);  in find_poly_roots()
1090 static int build_gf_tables(struct bch_control *bch, unsigned int poly)  in build_gf_tables()  argument
1093 	const unsigned int k = 1 << deg(poly);  in build_gf_tables()
1107 			x ^= poly;  in build_gf_tables()