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crypto: omap-sham - fix very small data size handling 

With very small data sizes, the whole data can end up in the xmit
buffer. This code path does not set the sg_len properly which causes the
core dma framework to crash. Fix by adding the proper size in place.
Also, the data length must be a multiple of block-size, so extend the
DMA data size while here.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tero Kristo 2020-05-27 15:24:27 +03:00 committed by Herbert Xu
parent 6395166d7a
commit 63832a0c6f
1 changed files with 2 additions and 0 deletions
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2
drivers/crypto/omap-sham.c
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@ -752,9 +752,11 @@ static int omap_sham_align_sgs(struct scatterlist *sg,
if (!sg || !sg->length || !nbytes) {
if (bufcnt) {
bufcnt = DIV_ROUND_UP(bufcnt, bs) * bs;
sg_init_table(rctx->sgl, 1);
sg_set_buf(rctx->sgl, rctx->dd->xmit_buf, bufcnt);
rctx->sg = rctx->sgl;
rctx->sg_len = 1;
}
return 0;