1222 static int drbg_make_shadow(struct drbg_state *drbg, struct drbg_state **shadow)  in drbg_make_shadow()  argument
1244 	*shadow = tmp;  in drbg_make_shadow()
1253 				struct drbg_state **shadow)  in drbg_restore_shadow()  argument
1255 	struct drbg_state *tmp = *shadow;  in drbg_restore_shadow()
1262 	*shadow = NULL;  in drbg_restore_shadow()
1290 	struct drbg_state *shadow = NULL;  in drbg_generate()  local
1307 	len = drbg_make_shadow(drbg, &shadow);  in drbg_generate()
1315 	if (buflen > (drbg_max_request_bytes(shadow))) {  in drbg_generate()
1324 	if (addtl && addtl->len > (drbg_max_addtl(shadow))) {  in drbg_generate()
1335 	if ((drbg_max_requests(shadow)) < shadow->reseed_ctr)  in drbg_generate()
1336 		shadow->seeded = false;  in drbg_generate()
1339 	len = shadow->d_ops->crypto_init(shadow);  in drbg_generate()
1343 	if (shadow->pr || !shadow->seeded) {  in drbg_generate()
1349 		len = drbg_seed(shadow, addtl, true);  in drbg_generate()
1371 	len = shadow->d_ops->generate(shadow, buf, buflen, &addtllist);  in drbg_generate()
1374 	shadow->reseed_ctr++;  in drbg_generate()
1394 	if (shadow->reseed_ctr && !(shadow->reseed_ctr % 4096)) {  in drbg_generate()
1413 			drbg_dealloc_state(shadow);  in drbg_generate()
1414 			kzfree(shadow);  in drbg_generate()
1428 	shadow->d_ops->crypto_fini(shadow);  in drbg_generate()
1429 	drbg_restore_shadow(drbg, &shadow);  in drbg_generate()