diff options
| author | Ovidiu Panait <ovidiu.panait@windriver.com> | 2023-12-24 11:21:35 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-12-29 06:25:56 +0300 |
| commit | 7bafa74d1ba35dcc173e1ce915e983d65905f77e (patch) | |
| tree | 2168a7b1ac9841984bd82a826df4b0623685d7a9 /drivers/crypto/sahara.c | |
| parent | 5deff027fca49a1eb3b20359333cf2ae562a2343 (diff) | |
| download | linux-7bafa74d1ba35dcc173e1ce915e983d65905f77e.tar.xz | |
crypto: sahara - fix processing hash requests with req->nbytes < sg->length
It's not always the case that the entire sg entry needs to be processed.
Currently, when nbytes is less than sg->length, "Descriptor length" errors
are encountered.
To fix this, take the actual request size into account when populating the
hw links.
Fixes: 5a2bb93f5992 ("crypto: sahara - add support for SHA1/256")
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/sahara.c')
| -rw-r--r-- | drivers/crypto/sahara.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c index d49659db6a48..321c11050457 100644 --- a/drivers/crypto/sahara.c +++ b/drivers/crypto/sahara.c @@ -774,6 +774,7 @@ static int sahara_sha_hw_links_create(struct sahara_dev *dev, int start) { struct scatterlist *sg; + unsigned int len; unsigned int i; int ret; @@ -795,12 +796,14 @@ static int sahara_sha_hw_links_create(struct sahara_dev *dev, if (!ret) return -EFAULT; + len = rctx->total; for (i = start; i < dev->nb_in_sg + start; i++) { - dev->hw_link[i]->len = sg->length; + dev->hw_link[i]->len = min(len, sg->length); dev->hw_link[i]->p = sg->dma_address; if (i == (dev->nb_in_sg + start - 1)) { dev->hw_link[i]->next = 0; } else { + len -= min(len, sg->length); dev->hw_link[i]->next = dev->hw_phys_link[i + 1]; sg = sg_next(sg); } |