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crypto: sahara - fix error handling in sahara_hw_descriptor_create() 

[ Upstream commit ee6e6f0a7f5b39d50a5ef5fcc006f4f693db18a7 ]

Do not call dma_unmap_sg() for scatterlists that were not mapped
successfully.

Fixes: 5de8875281 ("crypto: sahara - Add driver for SAHARA2 accelerator.")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ovidiu Panait 2023-12-01 19:06:23 +02:00 committed by Greg Kroah-Hartman
parent 4167eb9412
commit dffc3483c8
1 changed files with 3 additions and 5 deletions
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8
drivers/crypto/sahara.c
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@ -483,13 +483,14 @@ static int sahara_hw_descriptor_create(struct sahara_dev *dev)
DMA_TO_DEVICE);
if (!ret) {
dev_err(dev->device, "couldn't map in sg\n");
goto unmap_in;
return -EINVAL;
}
ret = dma_map_sg(dev->device, dev->out_sg, dev->nb_out_sg,
DMA_FROM_DEVICE);
if (!ret) {
dev_err(dev->device, "couldn't map out sg\n");
goto unmap_out;
goto unmap_in;
}
/* Create input links */
@ -537,9 +538,6 @@ static int sahara_hw_descriptor_create(struct sahara_dev *dev)
return 0;
unmap_out:
dma_unmap_sg(dev->device, dev->out_sg, dev->nb_out_sg,
DMA_FROM_DEVICE);
unmap_in:
dma_unmap_sg(dev->device, dev->in_sg, dev->nb_in_sg,
DMA_TO_DEVICE);