[PATCH v2 03/14] crypto: omap-aes: Populate number of SG elements
From: Joel Fernandes <hidden>
Date: 2013-08-18 02:47:14
Also in:
linux-crypto, linux-omap, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
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 <redacted> --- drivers/crypto/omap-aes.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index 26b802b..e369e6e 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c@@ -164,6 +164,8 @@ 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;
@@ -731,6 +733,10 @@ 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;
--
1.7.9.5