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Date: Tue, 11 Feb 2020 19:18:58 +0100
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Gilad Ben-Yossef <gilad@...yossef.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
"David S . Miller" <davem@...emloft.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J . Wysocki" <rafael@...nel.org>,
linux-crypto@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 04/34] crypto: ccree - remove unneeded casts
Unneeded casts prevent the compiler from performing valuable checks.
This is especially true for function pointers.
Remove these casts, to prevent silently introducing bugs when a
variable's type might be changed in the future.
No change in generated code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
v2:
- New.
drivers/crypto/ccree/cc_aead.c | 7 +++----
drivers/crypto/ccree/cc_buffer_mgr.c | 7 +++----
drivers/crypto/ccree/cc_cipher.c | 10 +++++-----
drivers/crypto/ccree/cc_hash.c | 24 ++++++++++++------------
4 files changed, 23 insertions(+), 25 deletions(-)
diff --git a/drivers/crypto/ccree/cc_aead.c b/drivers/crypto/ccree/cc_aead.c
index 0d95bda4de702a4a..7a62fb023d8d3769 100644
--- a/drivers/crypto/ccree/cc_aead.c
+++ b/drivers/crypto/ccree/cc_aead.c
@@ -448,8 +448,7 @@ static int cc_get_plain_hmac_key(struct crypto_aead *tfm, const u8 *authkey,
if (!key)
return -ENOMEM;
- key_dma_addr = dma_map_single(dev, (void *)key, keylen,
- DMA_TO_DEVICE);
+ key_dma_addr = dma_map_single(dev, key, keylen, DMA_TO_DEVICE);
if (dma_mapping_error(dev, key_dma_addr)) {
dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
key, keylen);
@@ -1921,8 +1920,8 @@ static int cc_proc_aead(struct aead_request *req,
}
/* Setup request structure */
- cc_req.user_cb = (void *)cc_aead_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_aead_complete;
+ cc_req.user_arg = req;
/* Setup request context */
areq_ctx->gen_ctx.op_type = direct;
diff --git a/drivers/crypto/ccree/cc_buffer_mgr.c b/drivers/crypto/ccree/cc_buffer_mgr.c
index 954f14bddf1d7852..1e335abd744024d8 100644
--- a/drivers/crypto/ccree/cc_buffer_mgr.c
+++ b/drivers/crypto/ccree/cc_buffer_mgr.c
@@ -118,7 +118,7 @@ void cc_copy_sg_portion(struct device *dev, u8 *dest, struct scatterlist *sg,
u32 nents;
nents = sg_nents_for_len(sg, end);
- sg_copy_buffer(sg, nents, (void *)dest, (end - to_skip + 1), to_skip,
+ sg_copy_buffer(sg, nents, dest, (end - to_skip + 1), to_skip,
(direct == CC_SG_TO_BUF));
}
@@ -415,10 +415,9 @@ int cc_map_cipher_request(struct cc_drvdata *drvdata, void *ctx,
/* Map IV buffer */
if (ivsize) {
- dump_byte_array("iv", (u8 *)info, ivsize);
+ dump_byte_array("iv", info, ivsize);
req_ctx->gen_ctx.iv_dma_addr =
- dma_map_single(dev, (void *)info,
- ivsize, DMA_BIDIRECTIONAL);
+ dma_map_single(dev, info, ivsize, DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, req_ctx->gen_ctx.iv_dma_addr)) {
dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
ivsize, info);
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
index fc1646ccfe29bcaa..91d2edee47b8c843 100644
--- a/drivers/crypto/ccree/cc_cipher.c
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -184,7 +184,7 @@ static int cc_cipher_init(struct crypto_tfm *tfm)
ctx_p->user.key);
/* Map key buffer */
- ctx_p->user.key_dma_addr = dma_map_single(dev, (void *)ctx_p->user.key,
+ ctx_p->user.key_dma_addr = dma_map_single(dev, ctx_p->user.key,
max_key_buf_size,
DMA_TO_DEVICE);
if (dma_mapping_error(dev, ctx_p->user.key_dma_addr)) {
@@ -284,7 +284,7 @@ static int cc_cipher_sethkey(struct crypto_skcipher *sktfm, const u8 *key,
dev_dbg(dev, "Setting HW key in context @%p for %s. keylen=%u\n",
ctx_p, crypto_tfm_alg_name(tfm), keylen);
- dump_byte_array("key", (u8 *)key, keylen);
+ dump_byte_array("key", key, keylen);
/* STAT_PHASE_0: Init and sanity checks */
@@ -387,7 +387,7 @@ static int cc_cipher_setkey(struct crypto_skcipher *sktfm, const u8 *key,
dev_dbg(dev, "Setting key in context @%p for %s. keylen=%u\n",
ctx_p, crypto_tfm_alg_name(tfm), keylen);
- dump_byte_array("key", (u8 *)key, keylen);
+ dump_byte_array("key", key, keylen);
/* STAT_PHASE_0: Init and sanity checks */
@@ -893,8 +893,8 @@ static int cc_cipher_process(struct skcipher_request *req,
}
/* Setup request structure */
- cc_req.user_cb = (void *)cc_cipher_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_cipher_complete;
+ cc_req.user_arg = req;
/* Setup CPP operation details */
if (ctx_p->key_type == CC_POLICY_PROTECTED_KEY) {
diff --git a/drivers/crypto/ccree/cc_hash.c b/drivers/crypto/ccree/cc_hash.c
index 912e5ce5079d11ae..36ce015716c317df 100644
--- a/drivers/crypto/ccree/cc_hash.c
+++ b/drivers/crypto/ccree/cc_hash.c
@@ -752,7 +752,7 @@ static int cc_hash_setkey(struct crypto_ahash *ahash, const u8 *key,
return -ENOMEM;
ctx->key_params.key_dma_addr =
- dma_map_single(dev, (void *)ctx->key_params.key, keylen,
+ dma_map_single(dev, ctx->key_params.key, keylen,
DMA_TO_DEVICE);
if (dma_mapping_error(dev, ctx->key_params.key_dma_addr)) {
dev_err(dev, "Mapping key va=0x%p len=%u for DMA failed\n",
@@ -1067,8 +1067,8 @@ static int cc_alloc_ctx(struct cc_hash_ctx *ctx)
ctx->key_params.keylen = 0;
ctx->digest_buff_dma_addr =
- dma_map_single(dev, (void *)ctx->digest_buff,
- sizeof(ctx->digest_buff), DMA_BIDIRECTIONAL);
+ dma_map_single(dev, ctx->digest_buff, sizeof(ctx->digest_buff),
+ DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, ctx->digest_buff_dma_addr)) {
dev_err(dev, "Mapping digest len %zu B at va=%pK for DMA failed\n",
sizeof(ctx->digest_buff), ctx->digest_buff);
@@ -1079,7 +1079,7 @@ static int cc_alloc_ctx(struct cc_hash_ctx *ctx)
&ctx->digest_buff_dma_addr);
ctx->opad_tmp_keys_dma_addr =
- dma_map_single(dev, (void *)ctx->opad_tmp_keys_buff,
+ dma_map_single(dev, ctx->opad_tmp_keys_buff,
sizeof(ctx->opad_tmp_keys_buff),
DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, ctx->opad_tmp_keys_dma_addr)) {
@@ -1196,8 +1196,8 @@ static int cc_mac_update(struct ahash_request *req)
idx++;
/* Setup request structure */
- cc_req.user_cb = (void *)cc_update_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_update_complete;
+ cc_req.user_arg = req;
rc = cc_send_request(ctx->drvdata, &cc_req, desc, idx, &req->base);
if (rc != -EINPROGRESS && rc != -EBUSY) {
@@ -1254,8 +1254,8 @@ static int cc_mac_final(struct ahash_request *req)
}
/* Setup request structure */
- cc_req.user_cb = (void *)cc_hash_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_hash_complete;
+ cc_req.user_arg = req;
if (state->xcbc_count && rem_cnt == 0) {
/* Load key for ECB decryption */
@@ -1369,8 +1369,8 @@ static int cc_mac_finup(struct ahash_request *req)
}
/* Setup request structure */
- cc_req.user_cb = (void *)cc_hash_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_hash_complete;
+ cc_req.user_arg = req;
if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) {
key_len = CC_AES_128_BIT_KEY_SIZE;
@@ -1448,8 +1448,8 @@ static int cc_mac_digest(struct ahash_request *req)
}
/* Setup request structure */
- cc_req.user_cb = (void *)cc_digest_complete;
- cc_req.user_arg = (void *)req;
+ cc_req.user_cb = cc_digest_complete;
+ cc_req.user_arg = req;
if (ctx->hw_mode == DRV_CIPHER_XCBC_MAC) {
key_len = CC_AES_128_BIT_KEY_SIZE;
--
2.17.1
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