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| author | Corentin Labbe <clabbe@baylibre.com> | 2022-05-02 20:19:15 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-05-13 17:24:18 +0800 |
| commit | c149e4763d28bb4c0e5daae8a59f2c74e889f407 (patch) | |
| tree | d45f98587d09c1139d4f709af42100e14b8f4b95 /drivers/crypto | |
| parent | 359e893e8af456be2fefabe851716237df289cbf (diff) | |
| download | linux-stable-c149e4763d28bb4c0e5daae8a59f2c74e889f407.tar.gz linux-stable-c149e4763d28bb4c0e5daae8a59f2c74e889f407.tar.bz2 linux-stable-c149e4763d28bb4c0e5daae8a59f2c74e889f407.zip | |
crypto: sun8i-ss - handle zero sized sg
sun8i-ss does not handle well the possible zero sized sg.
Fixes: d9b45418a917 ("crypto: sun8i-ss - support hash algorithms")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c index 1a71ed49d233..ca4f280af35d 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -380,13 +380,21 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) } len = areq->nbytes; - for_each_sg(areq->src, sg, nr_sgs, i) { + sg = areq->src; + i = 0; + while (len > 0 && sg) { + if (sg_dma_len(sg) == 0) { + sg = sg_next(sg); + continue; + } rctx->t_src[i].addr = sg_dma_address(sg); todo = min(len, sg_dma_len(sg)); rctx->t_src[i].len = todo / 4; len -= todo; rctx->t_dst[i].addr = addr_res; rctx->t_dst[i].len = digestsize / 4; + sg = sg_next(sg); + i++; } if (len > 0) { dev_err(ss->dev, "remaining len %d\n", len); |