On Thu, Aug 25, 2022 at 09:24:20AM +0200, Jack Wang wrote: > dma_map_sg return 0 on error. > > Cc: Corentin Labbe <clabbe.montjoie@xxxxxxxxx> > Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: Chen-Yu Tsai <wens@xxxxxxxx> > Cc: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > Cc: Samuel Holland <samuel@xxxxxxxxxxxx> > Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Cc: Minghao Chi <chi.minghao@xxxxxxxxxx> > Cc: Peng Wu <wupeng58@xxxxxxxxxx> > Cc: Alexey Khoroshilov <khoroshilov@xxxxxxxxx> > Cc: linux-crypto@xxxxxxxxxxxxxxx > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: linux-sunxi@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Fixes: 06f751b61329 ("crypto: allwinner - Add sun8i-ce Crypto Engine") > Fixes: d9b45418a917 ("crypto: sun8i-ss - support hash algorithms") > Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxx> > --- > drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c | 6 +++--- > drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c | 2 +- > drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 4 ++-- > drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 2 +- > 4 files changed, 7 insertions(+), 7 deletions(-) > > diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c > index 74b4e910a38d..be7f46faef7e 100644 > --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c > +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c > @@ -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 <= 0 || nr_sgs > MAX_SG) { > + if (!nr_sgs || nr_sgs > MAX_SG) { This is also less robust than the original code and I'll be reverting it. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt