diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index 5a7f6611803c..8e4a49b7ab4f 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -879,7 +879,7 @@ static int hifn_enable_crypto(struct hifn_device *dev)
 
 static void hifn_init_dma(struct hifn_device *dev)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	u32 dptr = dev->desc_dma;
 	int i;
 
@@ -1072,7 +1072,7 @@ static int hifn_setup_crypto_command(struct hifn_device *dev,
 		u8 *buf, unsigned dlen, unsigned slen,
 		u8 *key, int keylen, u8 *iv, int ivsize, u16 mode)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	struct hifn_crypt_command *cry_cmd;
 	u8 *buf_pos = buf;
 	u16 cmd_len;
@@ -1113,7 +1113,7 @@ static int hifn_setup_cmd_desc(struct hifn_device *dev,
 		struct hifn_context *ctx, struct hifn_request_context *rctx,
 		void *priv, unsigned int nbytes)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	int cmd_len, sa_idx;
 	u8 *buf, *buf_pos;
 	u16 mask;
@@ -1231,7 +1231,7 @@ static int hifn_setup_cmd_desc(struct hifn_device *dev,
 static int hifn_setup_src_desc(struct hifn_device *dev, struct page *page,
 		unsigned int offset, unsigned int size, int last)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	int idx;
 	dma_addr_t addr;
 
@@ -1264,7 +1264,7 @@ static int hifn_setup_src_desc(struct hifn_device *dev, struct page *page,
 
 static void hifn_setup_res_desc(struct hifn_device *dev)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 
 	dma->resr[dma->resi].l = __cpu_to_le32(HIFN_USED_RESULT |
 			HIFN_D_VALID | HIFN_D_LAST);
@@ -1290,7 +1290,7 @@ static void hifn_setup_res_desc(struct hifn_device *dev)
 static void hifn_setup_dst_desc(struct hifn_device *dev, struct page *page,
 		unsigned offset, unsigned size, int last)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	int idx;
 	dma_addr_t addr;
 
@@ -1710,7 +1710,7 @@ static void hifn_process_ready(struct skcipher_request *req, int error)
 
 static void hifn_clear_rings(struct hifn_device *dev, int error)
 {
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	int i, u;
 
 	dev_dbg(&dev->pdev->dev, "ring cleanup 1: i: %d.%d.%d.%d, u: %d.%d.%d.%d, "
@@ -1784,7 +1784,7 @@ static void hifn_work(struct work_struct *work)
 
 	spin_lock_irqsave(&dev->lock, flags);
 	if (dev->active == 0) {
-		struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+		struct hifn_dma *dma = dev->desc_virt;
 
 		if (dma->cmdu == 0 && (dev->flags & HIFN_FLAG_CMD_BUSY)) {
 			dev->flags &= ~HIFN_FLAG_CMD_BUSY;
@@ -1815,7 +1815,7 @@ static void hifn_work(struct work_struct *work)
 	if (reset) {
 		if (++dev->reset >= 5) {
 			int i;
-			struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+			struct hifn_dma *dma = dev->desc_virt;
 
 			dev_info(&dev->pdev->dev,
 				 "r: %08x, active: %d, started: %d, "
@@ -1848,8 +1848,8 @@ static void hifn_work(struct work_struct *work)
 
 static irqreturn_t hifn_interrupt(int irq, void *data)
 {
-	struct hifn_device *dev = (struct hifn_device *)data;
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_device *dev = data;
+	struct hifn_dma *dma = dev->desc_virt;
 	u32 dmacsr, restart;
 
 	dmacsr = hifn_read_1(dev, HIFN_1_DMA_CSR);
@@ -1914,7 +1914,7 @@ static void hifn_flush(struct hifn_device *dev)
 	unsigned long flags;
 	struct crypto_async_request *async_req;
 	struct skcipher_request *req;
-	struct hifn_dma *dma = (struct hifn_dma *)dev->desc_virt;
+	struct hifn_dma *dma = dev->desc_virt;
 	int i;
 
 	for (i = 0; i < HIFN_D_RES_RSIZE; ++i) {
diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c
index fe93d19e3044..00e5e709af65 100644
--- a/drivers/crypto/img-hash.c
+++ b/drivers/crypto/img-hash.c
@@ -209,7 +209,7 @@ static int img_hash_xmit_cpu(struct img_hash_dev *hdev, const u8 *buf,
 
 static void img_hash_dma_callback(void *data)
 {
-	struct img_hash_dev *hdev = (struct img_hash_dev *)data;
+	struct img_hash_dev *hdev = data;
 	struct img_hash_request_ctx *ctx = ahash_request_ctx(hdev->req);
 
 	if (ctx->bufcnt) {
diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index f4bc06c24ad8..df5f9d675c57 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -1037,7 +1037,7 @@ static void sa_free_sa_rx_data(struct sa_rx_data *rxd)
 
 static void sa_aes_dma_in_callback(void *data)
 {
-	struct sa_rx_data *rxd = (struct sa_rx_data *)data;
+	struct sa_rx_data *rxd = data;
 	struct skcipher_request *req;
 	u32 *result;
 	__be32 *mdptr;
@@ -1351,7 +1351,7 @@ static int sa_decrypt(struct skcipher_request *req)
 
 static void sa_sha_dma_in_callback(void *data)
 {
-	struct sa_rx_data *rxd = (struct sa_rx_data *)data;
+	struct sa_rx_data *rxd = data;
 	struct ahash_request *req;
 	struct crypto_ahash *tfm;
 	unsigned int authsize;
@@ -1689,7 +1689,7 @@ static void sa_sha_cra_exit(struct crypto_tfm *tfm)
 
 static void sa_aead_dma_in_callback(void *data)
 {
-	struct sa_rx_data *rxd = (struct sa_rx_data *)data;
+	struct sa_rx_data *rxd = data;
 	struct aead_request *req;
 	struct crypto_aead *tfm;
 	unsigned int start;
diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index dd4c703cd855..4c799df3e883 100644
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c
@@ -1035,7 +1035,7 @@ static int sahara_sha_process(struct ahash_request *req)
 
 static int sahara_queue_manage(void *data)
 {
-	struct sahara_dev *dev = (struct sahara_dev *)data;
+	struct sahara_dev *dev = data;
 	struct crypto_async_request *async_req;
 	struct crypto_async_request *backlog;
 	int ret = 0;
@@ -1270,7 +1270,7 @@ static struct ahash_alg sha_v4_algs[] = {
 
 static irqreturn_t sahara_irq_handler(int irq, void *data)
 {
-	struct sahara_dev *dev = (struct sahara_dev *)data;
+	struct sahara_dev *dev = data;
 	unsigned int stat = sahara_read(dev, SAHARA_REG_STATUS);
 	unsigned int err = sahara_read(dev, SAHARA_REG_ERRSTATUS);
 
