Commit f8c423ba authored by Jia Jie Ho's avatar Jia Jie Ho Committed by Herbert Xu
Browse files

crypto: starfive - Use fallback for unaligned dma access 



Dma address mapping fails on unaligned scatterlist offset. Use sw
fallback for these cases.

Signed-off-by: default avatarJia Jie Ho <jiajie.ho@starfivetech.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent d7f01649

drivers/crypto/starfive/jh7110-aes.c

+7 −5
Original line number Diff line number Diff line
@@ -314,7 +314,7 @@ static int starfive_aes_read_authtag(struct starfive_cryp_ctx *ctx) 
					 cryp->total_in, cryp->authsize, 1);

	} else {

		if (crypto_memneq(cryp->tag_in, cryp->tag_out, cryp->authsize))

			return dev_err_probe(cryp->dev, -EBADMSG, "Failed tag verification\n");

			return -EBADMSG;

	}



	return 0;
@@ -753,14 +753,16 @@ static bool starfive_aes_check_unaligned(struct starfive_cryp_dev *cryp, 
	int i;



	for_each_sg(src, tsg, sg_nents(src), i)

		if (!IS_ALIGNED(tsg->length, AES_BLOCK_SIZE) &&

		    !sg_is_last(tsg))

		if (!IS_ALIGNED(tsg->offset, sizeof(u32)) ||

		    (!IS_ALIGNED(tsg->length, AES_BLOCK_SIZE) &&

		     !sg_is_last(tsg)))

			return true;



	if (src != dst)

		for_each_sg(dst, tsg, sg_nents(dst), i)

			if (!IS_ALIGNED(tsg->length, AES_BLOCK_SIZE) &&

			    !sg_is_last(tsg))

			if (!IS_ALIGNED(tsg->offset, sizeof(u32)) ||

			    (!IS_ALIGNED(tsg->length, AES_BLOCK_SIZE) &&

			     !sg_is_last(tsg)))

				return true;



	return false;