29 	memzero_explicit(ctx->seed, ctx->slen);  in sun8i_ce_prng_exit()
32 	ctx->slen = 0;  in sun8i_ce_prng_exit()
36 		       unsigned int slen)  in sun8i_ce_prng_seed()  argument
40 	if (ctx->seed && ctx->slen != slen) {  in sun8i_ce_prng_seed()
41 		memzero_explicit(ctx->seed, ctx->slen);  in sun8i_ce_prng_seed()
43 		ctx->slen = 0;  in sun8i_ce_prng_seed()
47 		ctx->seed = kmalloc(slen, GFP_KERNEL | GFP_DMA);  in sun8i_ce_prng_seed()
51 	memcpy(ctx->seed, seed, slen);  in sun8i_ce_prng_seed()
52 	ctx->slen = slen;  in sun8i_ce_prng_seed()
58 			   unsigned int slen, u8 *dst, unsigned int dlen)  in sun8i_ce_prng_generate()  argument
76 	if (ctx->slen == 0) {  in sun8i_ce_prng_generate()
82 	todo = dlen + ctx->slen + PRNG_DATA_SIZE * 2;  in sun8i_ce_prng_generate()
92 		slen, dlen, todo, todo / PRNG_DATA_SIZE);  in sun8i_ce_prng_generate()
99 	dma_iv = dma_map_single(ce->dev, ctx->seed, ctx->slen, DMA_TO_DEVICE);  in sun8i_ce_prng_generate()
153 	dma_unmap_single(ce->dev, dma_iv, ctx->slen, DMA_TO_DEVICE);  in sun8i_ce_prng_generate()
157 		memcpy(ctx->seed, d + dlen, ctx->slen);  in sun8i_ce_prng_generate()