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| author | Joel Fernandes <joelf@ti.com> | 2013-08-18 04:42:24 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-08-21 13:27:59 +0200 |
| commit | e77c756eca76077032db23d8d4b85dcd743742b4 (patch) | |
| tree | 33f55e0e38d5aab727cb52d6c23f5e6bed781ecf | |
| parent | crypto: omap-aes - Add useful debug macros (diff) | |
| download | linux-e77c756eca76077032db23d8d4b85dcd743742b4.tar.xz linux-e77c756eca76077032db23d8d4b85dcd743742b4.zip | |
crypto: omap-aes - Populate number of SG elements
Crypto layer only passes nbytes but number of SG elements is needed for mapping
or unmapping SGs at one time using dma_map* API and also needed to pass in for
dmaengine prep function.
We call function added to scatterwalk for this purpose in omap_aes_handle_queue
to populate the values which are used later.
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/omap-aes.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index e5b2120a12b9..1cad12ef4f55 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -165,6 +165,8 @@ struct omap_aes_dev { void *buf_out; int dma_out; struct dma_chan *dma_lch_out; + int in_sg_len; + int out_sg_len; dma_addr_t dma_addr_out; const struct omap_aes_pdata *pdata; @@ -725,6 +727,10 @@ static int omap_aes_handle_queue(struct omap_aes_dev *dd, dd->out_offset = 0; dd->out_sg = req->dst; + dd->in_sg_len = scatterwalk_bytes_sglen(dd->in_sg, dd->total); + dd->out_sg_len = scatterwalk_bytes_sglen(dd->out_sg, dd->total); + 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; |