From 4df864c1d9afb46e2461a9f808d9f11a42d31bad Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:21 +0200 Subject: 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 Signed-off-by: David S. Miller --- drivers/bluetooth/hci_intel.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/bluetooth/hci_intel.c') diff --git a/drivers/bluetooth/hci_intel.c b/drivers/bluetooth/hci_intel.c index 16e728577cd8..ee97c465e32e 100644 --- a/drivers/bluetooth/hci_intel.c +++ b/drivers/bluetooth/hci_intel.c @@ -462,15 +462,15 @@ 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; -- cgit v1.2.3