34 	struct rk_bignum *bn;  in rk_bn_alloc()  local
36 	bn = kzalloc(sizeof(*bn), GFP_KERNEL);  in rk_bn_alloc()
37 	if (!bn)  in rk_bn_alloc()
40 	bn->data = kzalloc(round_up(max_size, sizeof(u32)), GFP_KERNEL);  in rk_bn_alloc()
41 	if (!bn->data) {  in rk_bn_alloc()
42 		kfree(bn);  in rk_bn_alloc()
46 	bn->n_words = BYTES2WORDS(max_size);  in rk_bn_alloc()
48 	return bn;  in rk_bn_alloc()
51 void rk_bn_free(struct rk_bignum *bn)  in rk_bn_free()  argument
53 	if (!bn)  in rk_bn_free()
56 	if (bn->data) {  in rk_bn_free()
57 		memset(bn->data, 0x00, WORDS2BYTES(bn->n_words));  in rk_bn_free()
58 		kfree(bn->data);  in rk_bn_free()
61 	kfree(bn);  in rk_bn_free()
64 int rk_bn_set_data(struct rk_bignum *bn, const u8 *data, u32 size, enum bignum_endian endian)  in rk_bn_set_data()  argument
66 	if (!bn || !data)  in rk_bn_set_data()
69 	if (BYTES2WORDS(size) > bn->n_words)  in rk_bn_set_data()
73 		memcpy(bn->data, data, size);  in rk_bn_set_data()
75 		rk_reverse_memcpy(bn->data, data, size);  in rk_bn_set_data()
80 int rk_bn_get_data(const struct rk_bignum *bn, u8 *data, u32 size, enum bignum_endian endian)  in rk_bn_get_data()  argument
82 	if (!bn || !data)  in rk_bn_get_data()
85 	if (size < WORDS2BYTES(bn->n_words))  in rk_bn_get_data()
91 		memcpy(data + size - WORDS2BYTES(bn->n_words), bn->data, bn->n_words);  in rk_bn_get_data()
93 		rk_reverse_memcpy(data + size - WORDS2BYTES(bn->n_words),  in rk_bn_get_data()
94 				  bn->data, WORDS2BYTES(bn->n_words));  in rk_bn_get_data()
99 u32 rk_bn_get_size(const struct rk_bignum *bn)  in rk_bn_get_size()  argument
101 	if (!bn)  in rk_bn_get_size()
104 	return WORDS2BYTES(bn->n_words);  in rk_bn_get_size()
113 int rk_bn_highest_bit(const struct rk_bignum *bn)  in rk_bn_highest_bit()  argument
118 	if (!bn || !bn->data || !bn->n_words)  in rk_bn_highest_bit()
121 	w = bn->data[bn->n_words - 1];  in rk_bn_highest_bit()
129 	return (int)(bn->n_words - 1) * RK_WORD_SIZE + b;  in rk_bn_highest_bit()