On Fri, Sep 04, 2020 at 11:09:54AM +0000, Corentin Labbe wrote:

+static int sun8i_ce_cipher_unprepare(struct crypto_engine *engine, void *async_req)
+{
+	struct skcipher_request *areq = container_of(async_req, struct skcipher_request, base);
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
+	struct sun8i_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
+	struct sun8i_ce_dev *ce = op->ce;
+	struct sun8i_cipher_req_ctx *rctx = skcipher_request_ctx(areq);
+	struct sun8i_ce_flow *chan;
+	struct ce_task *cet;
+	unsigned int ivsize, offset;
+	int nr_sgs = rctx->nr_sgs;
+	int nr_sgd = rctx->nr_sgd;
+	int flow;
+
+	flow = rctx->flow;
+	chan = &ce->chanlist[flow];
+	cet = chan->tl;
+	ivsize = crypto_skcipher_ivsize(tfm);
+
+	if (areq->src == areq->dst) {
+		dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_BIDIRECTIONAL);
+	} else {
+		if (nr_sgs > 0)
+			dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
+		dma_unmap_sg(ce->dev, areq->dst, nr_sgd, DMA_FROM_DEVICE);
+	}
+
+	if (areq->iv && ivsize > 0) {
+		if (cet->t_iv)
+			dma_unmap_single(ce->dev, cet->t_iv, rctx->ivlen,
+					 DMA_TO_DEVICE);

This creates a sparse warning:

  CHECK   ../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25: warning: incorrect type in argument 2 (different base types)
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25:    expected unsigned long long [usertype] addr
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:311:25:    got restricted __le32 [usertype] t_iv
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9: warning: incorrect type in argument 2 (different base types)
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9:    expected unsigned long long [usertype] addr
../drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c:322:9:    got restricted __le32 [usertype] t_key

Please fix.  Thanks,
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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