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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:21 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:39 -0400
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /net/nfc/nci
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.bz2
networking: make skb_put & friends 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 (skb_put, __skb_put and pskb_put) 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_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/nfc/nci')
-rw-r--r--net/nfc/nci/core.c2
-rw-r--r--net/nfc/nci/hci.c2
-rw-r--r--net/nfc/nci/spi.c8
-rw-r--r--net/nfc/nci/uart.c2
4 files changed, 7 insertions, 7 deletions
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index 17b9f1ce23db..a3dac34cf790 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -1341,7 +1341,7 @@ int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload)
return -ENOMEM;
}
- hdr = (struct nci_ctrl_hdr *) skb_put(skb, NCI_CTRL_HDR_SIZE);
+ hdr = skb_put(skb, NCI_CTRL_HDR_SIZE);
hdr->gid = nci_opcode_gid(opcode);
hdr->oid = nci_opcode_oid(opcode);
hdr->plen = plen;
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index d4a53ce818c3..d1119bb35f24 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -472,7 +472,7 @@ void nci_hci_data_received_cb(void *context,
return;
}
- *skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
+ *(u8 *)skb_put(hcp_skb, NCI_HCI_HCP_PACKET_HEADER_LEN) = pipe;
skb_queue_walk(&ndev->hci_dev->rx_hcp_frags, frag_skb) {
msg_len = frag_skb->len - NCI_HCI_HCP_PACKET_HEADER_LEN;
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c
index d904cd2f1442..a502a334918a 100644
--- a/net/nfc/nci/spi.c
+++ b/net/nfc/nci/spi.c
@@ -86,8 +86,8 @@ int nci_spi_send(struct nci_spi *nspi,
u16 crc;
crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
- *skb_put(skb, 1) = crc >> 8;
- *skb_put(skb, 1) = crc & 0xFF;
+ *(u8 *)skb_put(skb, 1) = crc >> 8;
+ *(u8 *)skb_put(skb, 1) = crc & 0xFF;
}
if (write_handshake_completion) {
@@ -172,8 +172,8 @@ static int send_acknowledge(struct nci_spi *nspi, u8 acknowledge)
hdr[3] = 0;
crc = crc_ccitt(CRC_INIT, skb->data, skb->len);
- *skb_put(skb, 1) = crc >> 8;
- *skb_put(skb, 1) = crc & 0xFF;
+ *(u8 *)skb_put(skb, 1) = crc >> 8;
+ *(u8 *)skb_put(skb, 1) = crc & 0xFF;
ret = __nci_spi_send(nspi, skb, 0);
diff --git a/net/nfc/nci/uart.c b/net/nfc/nci/uart.c
index cfa7f352c1c3..442f8eadfc76 100644
--- a/net/nfc/nci/uart.c
+++ b/net/nfc/nci/uart.c
@@ -355,7 +355,7 @@ static int nci_uart_default_recv_buf(struct nci_uart *nu, const u8 *data,
/* Eat byte after byte till full packet header is received */
if (nu->rx_skb->len < NCI_CTRL_HDR_SIZE) {
- *skb_put(nu->rx_skb, 1) = *data++;
+ *(u8 *)skb_put(nu->rx_skb, 1) = *data++;
--count;
continue;
}