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Commit e77c756e authored by Joel Fernandes's avatar Joel Fernandes Committed by Herbert Xu
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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: default avatarJoel Fernandes <joelf@ti.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 016af9b5

drivers/crypto/omap-aes.c

+6 −0
Original line number Diff line number Diff line
@@ -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;