Merge tag 'v4.5' into next

Merge with Linux 4.5 to get PROPERTY_ENTRY_INTEGER() that is needed to
fix pxa/raumfeld rotary encoder properties.

1 files changed, 38 insertions, 18 deletions

diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c
index 615da961c4d8..3b1c7ecf078f 100644
--- a/drivers/crypto/picoxcell_crypto.c
+++ b/drivers/crypto/picoxcell_crypto.c
@@ -272,12 +272,6 @@ static unsigned spacc_load_ctx(struct spacc_generic_ctx *ctx,
 	return indx;
 }
 
-/* Count the number of scatterlist entries in a scatterlist. */
-static inline int sg_count(struct scatterlist *sg_list, int nbytes)
-{
-	return sg_nents_for_len(sg_list, nbytes);
-}
-
 static inline void ddt_set(struct spacc_ddt *ddt, dma_addr_t phys, size_t len)
 {
 	ddt->p = phys;
@@ -295,12 +289,17 @@ static struct spacc_ddt *spacc_sg_to_ddt(struct spacc_engine *engine,
 					 enum dma_data_direction dir,
 					 dma_addr_t *ddt_phys)
 {
-	unsigned nents, mapped_ents;
+	unsigned mapped_ents;
 	struct scatterlist *cur;
 	struct spacc_ddt *ddt;
 	int i;
+	int nents;
 
-	nents = sg_count(payload, nbytes);
+	nents = sg_nents_for_len(payload, nbytes);
+	if (nents < 0) {
+		dev_err(engine->dev, "Invalid numbers of SG.\n");
+		return NULL;
+	}
 	mapped_ents = dma_map_sg(engine->dev, payload, nents, dir);
 
 	if (mapped_ents + 1 > MAX_DDT_LEN)
@@ -328,7 +327,7 @@ static int spacc_aead_make_ddts(struct aead_request *areq)
 	struct spacc_engine *engine = req->engine;
 	struct spacc_ddt *src_ddt, *dst_ddt;
 	unsigned total;
-	unsigned int src_nents, dst_nents;
+	int src_nents, dst_nents;
 	struct scatterlist *cur;
 	int i, dst_ents, src_ents;
 
@@ -336,13 +335,21 @@ static int spacc_aead_make_ddts(struct aead_request *areq)
 	if (req->is_encrypt)
 		total += crypto_aead_authsize(aead);
 
-	src_nents = sg_count(areq->src, total);
+	src_nents = sg_nents_for_len(areq->src, total);
+	if (src_nents < 0) {
+		dev_err(engine->dev, "Invalid numbers of src SG.\n");
+		return src_nents;
+	}
 	if (src_nents + 1 > MAX_DDT_LEN)
 		return -E2BIG;
 
 	dst_nents = 0;
 	if (areq->src != areq->dst) {
-		dst_nents = sg_count(areq->dst, total);
+		dst_nents = sg_nents_for_len(areq->dst, total);
+		if (dst_nents < 0) {
+			dev_err(engine->dev, "Invalid numbers of dst SG.\n");
+			return dst_nents;
+		}
 		if (src_nents + 1 > MAX_DDT_LEN)
 			return -E2BIG;
 	}
@@ -422,13 +429,22 @@ static void spacc_aead_free_ddts(struct spacc_req *req)
 			 (req->is_encrypt ? crypto_aead_authsize(aead) : 0);
 	struct spacc_aead_ctx *aead_ctx = crypto_aead_ctx(aead);
 	struct spacc_engine *engine = aead_ctx->generic.engine;
-	unsigned nents = sg_count(areq->src, total);
+	int nents = sg_nents_for_len(areq->src, total);
+
+	/* sg_nents_for_len should not fail since it works when mapping sg */
+	if (unlikely(nents < 0)) {
+		dev_err(engine->dev, "Invalid numbers of src SG.\n");
+		return;
+	}
 
 	if (areq->src != areq->dst) {
 		dma_unmap_sg(engine->dev, areq->src, nents, DMA_TO_DEVICE);
-		dma_unmap_sg(engine->dev, areq->dst,
-			     sg_count(areq->dst, total),
-			     DMA_FROM_DEVICE);
+		nents = sg_nents_for_len(areq->dst, total);
+		if (unlikely(nents < 0)) {
+			dev_err(engine->dev, "Invalid numbers of dst SG.\n");
+			return;
+		}
+		dma_unmap_sg(engine->dev, areq->dst, nents, DMA_FROM_DEVICE);
 	} else
 		dma_unmap_sg(engine->dev, areq->src, nents, DMA_BIDIRECTIONAL);
 
@@ -440,7 +456,12 @@ static void spacc_free_ddt(struct spacc_req *req, struct spacc_ddt *ddt,
 			   dma_addr_t ddt_addr, struct scatterlist *payload,
 			   unsigned nbytes, enum dma_data_direction dir)
 {
-	unsigned nents = sg_count(payload, nbytes);
+	int nents = sg_nents_for_len(payload, nbytes);
+
+	if (nents < 0) {
+		dev_err(req->engine->dev, "Invalid numbers of SG.\n");
+		return;
+	}
 
 	dma_unmap_sg(req->engine->dev, payload, nents, dir);
 	dma_pool_free(req->engine->req_pool, ddt, ddt_addr);
@@ -835,8 +856,7 @@ static int spacc_ablk_need_fallback(struct spacc_req *req)
 
 static void spacc_ablk_complete(struct spacc_req *req)
 {
-	struct ablkcipher_request *ablk_req =
-		container_of(req->req, struct ablkcipher_request, base);
+	struct ablkcipher_request *ablk_req = ablkcipher_request_cast(req->req);
 
 	if (ablk_req->src != ablk_req->dst) {
 		spacc_free_ddt(req, req->src_ddt, req->src_addr, ablk_req->src,