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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-12 08:17:52 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-07-18 12:35:48 +0300 |
| commit | 7c001a8650e67cb293120044c3f62756258ed27c (patch) | |
| tree | 3e9746ad358e23a0380f38a5a11005927951e4da /drivers/crypto/omap-aes.c | |
| parent | 3a01d0ee2b991c8c267620e63a4ab47cd8c30cc4 (diff) | |
| download | linux-7c001a8650e67cb293120044c3f62756258ed27c.tar.xz | |
crypto: omap - Stop using crypto scatterwalk_bytes_sglen
We already have a generic function sg_nents_for_len which does
the same thing. This patch switches omap over to it and also
adds error handling in case the SG list is short.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/omap-aes.c')
| -rw-r--r-- | drivers/crypto/omap-aes.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 8178632de788..4ab53a604312 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -578,10 +578,12 @@ static int omap_aes_copy_sgs(struct omap_aes_dev *dd) sg_init_table(&dd->in_sgl, 1); sg_set_buf(&dd->in_sgl, buf_in, total); dd->in_sg = &dd->in_sgl; + dd->in_sg_len = 1; sg_init_table(&dd->out_sgl, 1); sg_set_buf(&dd->out_sgl, buf_out, total); dd->out_sg = &dd->out_sgl; + dd->out_sg_len = 1; return 0; } @@ -602,7 +604,6 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, crypto_ablkcipher_reqtfm(req)); struct omap_aes_dev *dd = omap_aes_find_dev(ctx); struct omap_aes_reqctx *rctx; - int len; if (!dd) return -ENODEV; @@ -614,6 +615,14 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, dd->in_sg = req->src; dd->out_sg = req->dst; + dd->in_sg_len = sg_nents_for_len(dd->in_sg, dd->total); + if (dd->in_sg_len < 0) + return dd->in_sg_len; + + dd->out_sg_len = sg_nents_for_len(dd->out_sg, dd->total); + if (dd->out_sg_len < 0) + return dd->out_sg_len; + if (omap_aes_check_aligned(dd->in_sg, dd->total) || omap_aes_check_aligned(dd->out_sg, dd->total)) { if (omap_aes_copy_sgs(dd)) @@ -623,11 +632,6 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, dd->sgs_copied = 0; } - len = ALIGN(dd->total, AES_BLOCK_SIZE); - dd->in_sg_len = scatterwalk_bytes_sglen(dd->in_sg, len); - dd->out_sg_len = scatterwalk_bytes_sglen(dd->out_sg, len); - BUG_ON(dd->in_sg_len < 0 || dd->out_sg_len < 0); - rctx = ablkcipher_request_ctx(req); ctx = crypto_ablkcipher_ctx(crypto_ablkcipher_reqtfm(req)); rctx->mode &= FLAGS_MODE_MASK; |