Commit 66f0b6b7 authored by Jack Wang's avatar Jack Wang Committed by Herbert Xu
Browse files

crypto: sahara - Fix error check for dma_map_sg 



dma_map_sg return 0 on error, it returns the number of
DMA address segments mapped (this may be shorter
than <nents> passed in if some elements of the scatter/gather
list are physically or virtually adjacent and an IOMMU maps
them with a single entry).

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

Signed-off-by: default avatarJack Wang <jinpu.wang@ionos.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 545665ad

drivers/crypto/sahara.c

+2 −2
Original line number Diff line number Diff line
@@ -487,13 +487,13 @@ static int sahara_hw_descriptor_create(struct sahara_dev *dev) 


	ret = dma_map_sg(dev->device, dev->in_sg, dev->nb_in_sg,

			 DMA_TO_DEVICE);

	if (ret != dev->nb_in_sg) {

	if (!ret) {

		dev_err(dev->device, "couldn't map in sg\n");

		goto unmap_in;

	}

	ret = dma_map_sg(dev->device, dev->out_sg, dev->nb_out_sg,

			 DMA_FROM_DEVICE);

	if (ret != dev->nb_out_sg) {

	if (!ret) {

		dev_err(dev->device, "couldn't map out sg\n");

		goto unmap_out;

	}