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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:23 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:40 -0400
commitd58ff35122847a83ba55394e2ae3a1527b6febf5 (patch)
treee1ecf758e86519922c403f1aa88f19ef25a554ad /net/nfc/nci
parentaf72868b9070d1b843c829f0d0d0b22c04a20815 (diff)
downloadlinux-d58ff35122847a83ba55394e2ae3a1527b6febf5.tar.bz2
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 'net/nfc/nci')
-rw-r--r--net/nfc/nci/data.c2
-rw-r--r--net/nfc/nci/hci.c4
-rw-r--r--net/nfc/nci/spi.c4
3 files changed, 5 insertions, 5 deletions
diff --git a/net/nfc/nci/data.c b/net/nfc/nci/data.c
index 2488d9241f1d..908f25e3773e 100644
--- a/net/nfc/nci/data.c
+++ b/net/nfc/nci/data.c
@@ -81,7 +81,7 @@ static inline void nci_push_data_hdr(struct nci_dev *ndev,
struct nci_data_hdr *hdr;
int plen = skb->len;
- hdr = (struct nci_data_hdr *) skb_push(skb, NCI_DATA_HDR_SIZE);
+ hdr = skb_push(skb, NCI_DATA_HDR_SIZE);
hdr->conn_id = conn_id;
hdr->rfu = 0;
hdr->plen = plen;
diff --git a/net/nfc/nci/hci.c b/net/nfc/nci/hci.c
index d1119bb35f24..3f93df58d9f1 100644
--- a/net/nfc/nci/hci.c
+++ b/net/nfc/nci/hci.c
@@ -170,7 +170,7 @@ static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
return -ENOMEM;
skb_reserve(skb, NCI_DATA_HDR_SIZE + 2);
- *skb_push(skb, 1) = data_type;
+ *(u8 *)skb_push(skb, 1) = data_type;
do {
len = conn_info->max_pkt_payload_len;
@@ -184,7 +184,7 @@ static int nci_hci_send_data(struct nci_dev *ndev, u8 pipe,
len = conn_info->max_pkt_payload_len - skb->len - 1;
}
- *skb_push(skb, 1) = cb;
+ *(u8 *)skb_push(skb, 1) = cb;
if (len > 0)
skb_put_data(skb, data + i, len);
diff --git a/net/nfc/nci/spi.c b/net/nfc/nci/spi.c
index a502a334918a..3b4512731a2f 100644
--- a/net/nfc/nci/spi.c
+++ b/net/nfc/nci/spi.c
@@ -238,8 +238,8 @@ static struct sk_buff *__nci_spi_read(struct nci_spi *nspi)
goto receive_error;
if (nspi->acknowledge_mode == NCI_SPI_CRC_ENABLED) {
- *skb_push(skb, 1) = resp_hdr[1];
- *skb_push(skb, 1) = resp_hdr[0];
+ *(u8 *)skb_push(skb, 1) = resp_hdr[1];
+ *(u8 *)skb_push(skb, 1) = resp_hdr[0];
}
return skb;