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Revert "crypto: allwinner - Fix dma_map_sg error check"

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This reverts commit 2b02187bdb.

The original code was correct and arguably more robust than the
patched version.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2022-09-02 18:19:27 +08:00
parent fb1e1257b0
commit 2ad548ebb8
4 changed files with 7 additions and 7 deletions
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6
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
View File

@ -208,7 +208,7 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
if (areq->src == areq->dst) {
nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_BIDIRECTIONAL);
if (!nr_sgs || nr_sgs > MAX_SG) {
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend_iv;
@ -216,13 +216,13 @@ static int sun8i_ce_cipher_prepare(struct crypto_engine *engine, void *async_req
nr_sgd = nr_sgs;
} else {
nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE);
if (!nr_sgs || nr_sgs > MAX_SG) {
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend_iv;
}
nr_sgd = dma_map_sg(ce->dev, areq->dst, nd, DMA_FROM_DEVICE);
if (!nr_sgd || nr_sgd > MAX_SG) {
if (nr_sgd <= 0 || nr_sgd > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgd);
err = -EINVAL;
goto theend_sgs;

2
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
View File

@ -389,7 +389,7 @@ int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq)
cet->t_asym_ctl = 0;
nr_sgs = dma_map_sg(ce->dev, areq->src, ns, DMA_TO_DEVICE);
if (!nr_sgs || nr_sgs > MAX_SG) {
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend;

4
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
View File

@ -232,13 +232,13 @@ static int sun8i_ss_cipher(struct skcipher_request *areq)
nr_sgd = nr_sgs;
} else {
nr_sgs = dma_map_sg(ss->dev, areq->src, nsgs, DMA_TO_DEVICE);
if (!nr_sgs || nr_sgs > 8) {
if (nr_sgs <= 0 || nr_sgs > 8) {
dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend_iv;
}
nr_sgd = dma_map_sg(ss->dev, areq->dst, nsgd, DMA_FROM_DEVICE);
if (!nr_sgd || nr_sgd > 8) {
if (nr_sgd <= 0 || nr_sgd > 8) {
dev_err(ss->dev, "Invalid sg number %d\n", nr_sgd);
err = -EINVAL;
goto theend_sgs;

2
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
View File

@ -527,7 +527,7 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
rctx->method = ss->variant->alg_hash[algt->ss_algo_id];
nr_sgs = dma_map_sg(ss->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
if (!nr_sgs || nr_sgs > MAX_SG) {
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
dev_err(ss->dev, "Invalid sg number %d\n", nr_sgs);
err = -EINVAL;
goto theend;