diff options
author | Johannes Berg <johannes.berg@intel.com> | 2017-06-16 14:29:23 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-06-16 11:48:40 -0400 |
commit | d58ff35122847a83ba55394e2ae3a1527b6febf5 (patch) | |
tree | e1ecf758e86519922c403f1aa88f19ef25a554ad /drivers/nfc | |
parent | af72868b9070d1b843c829f0d0d0b22c04a20815 (diff) | |
download | linux-d58ff35122847a83ba55394e2ae3a1527b6febf5.tar.gz linux-d58ff35122847a83ba55394e2ae3a1527b6febf5.tar.bz2 linux-d58ff35122847a83ba55394e2ae3a1527b6febf5.zip |
networking: make skb_push & __skb_push return void pointers
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions return void * and remove all the casts across
the tree, adding a (u8 *) cast only where the unsigned char pointer
was used directly, all done with the following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
@@
expression SKB, LEN;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
@@
- fn(SKB, LEN)[0]
+ *(u8 *)fn(SKB, LEN)
Note that the last part there converts from push(...)[0] to the
more idiomatic *(u8 *)push(...).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/nfc')
-rw-r--r-- | drivers/nfc/fdp/i2c.c | 4 | ||||
-rw-r--r-- | drivers/nfc/microread/i2c.c | 2 | ||||
-rw-r--r-- | drivers/nfc/microread/microread.c | 4 | ||||
-rw-r--r-- | drivers/nfc/nfcmrvl/main.c | 2 | ||||
-rw-r--r-- | drivers/nfc/pn533/pn533.c | 8 | ||||
-rw-r--r-- | drivers/nfc/pn544/i2c.c | 2 | ||||
-rw-r--r-- | drivers/nfc/pn544/pn544.c | 8 | ||||
-rw-r--r-- | drivers/nfc/st-nci/ndlc.c | 2 | ||||
-rw-r--r-- | drivers/nfc/st21nfca/core.c | 6 | ||||
-rw-r--r-- | drivers/nfc/st21nfca/dep.c | 30 | ||||
-rw-r--r-- | drivers/nfc/st21nfca/i2c.c | 4 |
11 files changed, 36 insertions, 36 deletions
diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c index 97f003e84381..d5781aa0f791 100644 --- a/drivers/nfc/fdp/i2c.c +++ b/drivers/nfc/fdp/i2c.c @@ -79,8 +79,8 @@ static void fdp_nci_i2c_add_len_lrc(struct sk_buff *skb) /* Add length header */ len = skb->len; - *skb_push(skb, 1) = len & 0xff; - *skb_push(skb, 1) = len >> 8; + *(u8 *)skb_push(skb, 1) = len & 0xff; + *(u8 *)skb_push(skb, 1) = len >> 8; /* Compute and add lrc */ for (i = 0; i < len + 2; i++) diff --git a/drivers/nfc/microread/i2c.c b/drivers/nfc/microread/i2c.c index 8e328c36a816..386cc61d95b9 100644 --- a/drivers/nfc/microread/i2c.c +++ b/drivers/nfc/microread/i2c.c @@ -70,7 +70,7 @@ static void microread_i2c_add_len_crc(struct sk_buff *skb) int len; len = skb->len; - *skb_push(skb, 1) = len; + *(u8 *)skb_push(skb, 1) = len; for (i = 0; i < skb->len; i++) crc = crc ^ skb->data[i]; diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c index 9d0dd1be0923..38a979eacc29 100644 --- a/drivers/nfc/microread/microread.c +++ b/drivers/nfc/microread/microread.c @@ -419,7 +419,7 @@ static int microread_im_transceive(struct nfc_hci_dev *hdev, pr_info("data exchange to gate 0x%x\n", target->hci_reader_gate); if (target->hci_reader_gate == MICROREAD_GATE_ID_P2P_INITIATOR) { - *skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; return nfc_hci_send_event(hdev, target->hci_reader_gate, MICROREAD_EVT_P2P_INITIATOR_EXCHANGE_TO_RF, @@ -453,7 +453,7 @@ static int microread_im_transceive(struct nfc_hci_dev *hdev, return 1; } - *skb_push(skb, 1) = control_bits; + *(u8 *)skb_push(skb, 1) = control_bits; info->async_cb_type = MICROREAD_CB_TYPE_READER_ALL; info->async_cb = cb; diff --git a/drivers/nfc/nfcmrvl/main.c b/drivers/nfc/nfcmrvl/main.c index 51c8240a1672..c5038e6447bd 100644 --- a/drivers/nfc/nfcmrvl/main.c +++ b/drivers/nfc/nfcmrvl/main.c @@ -68,7 +68,7 @@ static int nfcmrvl_nci_send(struct nci_dev *ndev, struct sk_buff *skb) unsigned char *hdr; unsigned char len = skb->len; - hdr = (char *) skb_push(skb, NFCMRVL_HCI_EVENT_HEADER_SIZE); + hdr = skb_push(skb, NFCMRVL_HCI_EVENT_HEADER_SIZE); hdr[0] = NFCMRVL_HCI_COMMAND_CODE; hdr[1] = NFCMRVL_HCI_OGF; hdr[2] = NFCMRVL_HCI_OCF; diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c index 68a3cd0287f6..6a711b5b9490 100644 --- a/drivers/nfc/pn533/pn533.c +++ b/drivers/nfc/pn533/pn533.c @@ -2090,10 +2090,10 @@ static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb) /* MI + TG */ if (frag_size == PN533_CMD_DATAFRAME_MAXLEN) - *skb_push(frag, sizeof(u8)) = - (PN533_CMD_MI_MASK | 1); + *(u8 *)skb_push(frag, sizeof(u8)) = + (PN533_CMD_MI_MASK | 1); else - *skb_push(frag, sizeof(u8)) = 1; /* TG */ + *(u8 *)skb_push(frag, sizeof(u8)) = 1; /* TG */ } skb_put_data(frag, skb->data, frag_size); @@ -2160,7 +2160,7 @@ static int pn533_transceive(struct nfc_dev *nfc_dev, goto error; } } else { - *skb_push(skb, sizeof(u8)) = 1; /* TG */ + *(u8 *)skb_push(skb, sizeof(u8)) = 1; /* TG */ } rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c index dc1e3768cee6..b7be6c25b7e6 100644 --- a/drivers/nfc/pn544/i2c.c +++ b/drivers/nfc/pn544/i2c.c @@ -283,7 +283,7 @@ static void pn544_hci_i2c_add_len_crc(struct sk_buff *skb) int len; len = skb->len + 2; - *skb_push(skb, 1) = len; + *(u8 *)skb_push(skb, 1) = len; crc = crc_ccitt(0xffff, skb->data, skb->len); crc = ~crc; diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c index 12e819ddf17a..70e898e38b16 100644 --- a/drivers/nfc/pn544/pn544.c +++ b/drivers/nfc/pn544/pn544.c @@ -649,8 +649,8 @@ static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev, } else return 1; case PN544_RF_READER_F_GATE: - *skb_push(skb, 1) = 0; - *skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; info->async_cb_type = PN544_CB_TYPE_READER_F; info->async_cb = cb; @@ -665,7 +665,7 @@ static int pn544_hci_im_transceive(struct nfc_hci_dev *hdev, PN544_JEWEL_RAW_CMD, skb->data, skb->len, cb, cb_context); case PN544_RF_READER_NFCIP1_INITIATOR_GATE: - *skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; return nfc_hci_send_event(hdev, target->hci_reader_gate, PN544_HCI_EVT_SND_DATA, skb->data, @@ -680,7 +680,7 @@ static int pn544_hci_tm_send(struct nfc_hci_dev *hdev, struct sk_buff *skb) int r; /* Set default false for multiple information chaining */ - *skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; r = nfc_hci_send_event(hdev, PN544_RF_READER_NFCIP1_TARGET_GATE, PN544_HCI_EVT_SND_DATA, skb->data, skb->len); diff --git a/drivers/nfc/st-nci/ndlc.c b/drivers/nfc/st-nci/ndlc.c index 50880d747b02..9477994cf975 100644 --- a/drivers/nfc/st-nci/ndlc.c +++ b/drivers/nfc/st-nci/ndlc.c @@ -87,7 +87,7 @@ int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb) u8 pcb = PCB_TYPE_DATAFRAME | PCB_DATAFRAME_RETRANSMIT_NO | PCB_FRAME_CRC_INFO_NOTPRESENT; - *skb_push(skb, 1) = pcb; + *(u8 *)skb_push(skb, 1) = pcb; skb_queue_tail(&ndlc->send_q, skb); schedule_work(&ndlc->sm_work); diff --git a/drivers/nfc/st21nfca/core.c b/drivers/nfc/st21nfca/core.c index 50be3b788f1c..e803fdfa9189 100644 --- a/drivers/nfc/st21nfca/core.c +++ b/drivers/nfc/st21nfca/core.c @@ -782,12 +782,12 @@ static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev, if (target->supported_protocols == NFC_PROTO_NFC_DEP_MASK) return st21nfca_im_send_dep_req(hdev, skb); - *skb_push(skb, 1) = 0x1a; + *(u8 *)skb_push(skb, 1) = 0x1a; return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate, ST21NFCA_WR_XCHG_DATA, skb->data, skb->len, cb, cb_context); case ST21NFCA_RF_READER_14443_3_A_GATE: - *skb_push(skb, 1) = 0x1a; /* CTR, see spec:10.2.2.1 */ + *(u8 *)skb_push(skb, 1) = 0x1a; /* CTR, see spec:10.2.2.1 */ return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate, ST21NFCA_WR_XCHG_DATA, skb->data, @@ -797,7 +797,7 @@ static int st21nfca_hci_im_transceive(struct nfc_hci_dev *hdev, info->async_cb = cb; info->async_cb_context = cb_context; - *skb_push(skb, 1) = 0x17; + *(u8 *)skb_push(skb, 1) = 0x17; return nfc_hci_send_cmd_async(hdev, target->hci_reader_gate, ST21NFCA_WR_XCHG_DATA, skb->data, diff --git a/drivers/nfc/st21nfca/dep.c b/drivers/nfc/st21nfca/dep.c index ada7b114b6c1..fd08be2917e6 100644 --- a/drivers/nfc/st21nfca/dep.c +++ b/drivers/nfc/st21nfca/dep.c @@ -315,10 +315,10 @@ int st21nfca_tm_send_dep_res(struct nfc_hci_dev *hdev, struct sk_buff *skb) int r; struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev); - *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; - *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES; - *skb_push(skb, 1) = ST21NFCA_NFCIP1_RES; - *skb_push(skb, 1) = skb->len; + *(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_RES; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_RES; + *(u8 *)skb_push(skb, 1) = skb->len; r = nfc_hci_send_event(hdev, ST21NFCA_RF_CARD_F_GATE, ST21NFCA_EVT_SEND_DATA, skb->data, skb->len); @@ -466,7 +466,7 @@ static void st21nfca_im_send_psl_req(struct nfc_hci_dev *hdev, u8 did, u8 bsi, psl_req->brs = (0x30 & bsi << 4) | (bri & 0x03); psl_req->fsl = lri; - *skb_push(skb, 1) = info->dep_info.to | 0x10; + *(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; st21nfca_im_send_pdu(info, skb); } @@ -568,7 +568,7 @@ int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len) } atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len; - *skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */ + *(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; /* timeout */ info->async_cb_type = ST21NFCA_CB_TYPE_READER_F; info->async_cb_context = info; @@ -629,10 +629,10 @@ static void st21nfca_im_recv_dep_res_cb(void *context, struct sk_buff *skb, case ST21NFCA_NFC_DEP_PFB_SUPERVISOR_PDU: pr_err("Received a SUPERVISOR PDU\n"); skb_pull(skb, size); - *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; - *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; - *skb_push(skb, 1) = skb->len; - *skb_push(skb, 1) = info->dep_info.to | 0x10; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; + *(u8 *)skb_push(skb, 1) = skb->len; + *(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; st21nfca_im_send_pdu(info, skb); break; @@ -655,12 +655,12 @@ int st21nfca_im_send_dep_req(struct nfc_hci_dev *hdev, struct sk_buff *skb) info->async_cb_context = info; info->async_cb = st21nfca_im_recv_dep_res_cb; - *skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; - *skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; - *skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; - *skb_push(skb, 1) = skb->len; + *(u8 *)skb_push(skb, 1) = info->dep_info.curr_nfc_dep_pni; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_DEP_REQ; + *(u8 *)skb_push(skb, 1) = ST21NFCA_NFCIP1_REQ; + *(u8 *)skb_push(skb, 1) = skb->len; - *skb_push(skb, 1) = info->dep_info.to | 0x10; + *(u8 *)skb_push(skb, 1) = info->dep_info.to | 0x10; return nfc_hci_send_cmd_async(hdev, ST21NFCA_RF_READER_F_GATE, ST21NFCA_WR_XCHG_DATA, diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c index c36f0e0afdfd..396cdafb3e36 100644 --- a/drivers/nfc/st21nfca/i2c.c +++ b/drivers/nfc/st21nfca/i2c.c @@ -171,7 +171,7 @@ static void st21nfca_hci_add_len_crc(struct sk_buff *skb) u16 crc; u8 tmp; - *skb_push(skb, 1) = 0; + *(u8 *)skb_push(skb, 1) = 0; crc = crc_ccitt(0xffff, skb->data, skb->len); crc = ~crc; @@ -216,7 +216,7 @@ static int st21nfca_hci_i2c_write(void *phy_id, struct sk_buff *skb) /* add ST21NFCA_SOF_EOF on tail */ *(u8 *)skb_put(skb, 1) = ST21NFCA_SOF_EOF; /* add ST21NFCA_SOF_EOF on head */ - *skb_push(skb, 1) = ST21NFCA_SOF_EOF; + *(u8 *)skb_push(skb, 1) = ST21NFCA_SOF_EOF; /* * Compute byte stuffing |