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>
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index c7ea398..ba207c7 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1836,15 +1836,15 @@ static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
if (!skb)
return -ENOMEM;
- hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->evt = HCI_EV_CMD_COMPLETE;
hdr->plen = sizeof(*evt) + 1;
- evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
+ evt = skb_put(skb, sizeof(*evt));
evt->ncmd = 0x01;
evt->opcode = cpu_to_le16(opcode);
- *skb_put(skb, 1) = 0x00;
+ *(u8 *)skb_put(skb, 1) = 0x00;
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
@@ -2767,8 +2767,8 @@ static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
return ERR_PTR(-ENOMEM);
}
- *skb_put(skb, 1) = 0xf0;
- *skb_put(skb, 1) = enable;
+ *(u8 *)skb_put(skb, 1) = 0xf0;
+ *(u8 *)skb_put(skb, 1) = enable;
pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);