From 4df864c1d9afb46e2461a9f808d9f11a42d31bad Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
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 <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/bluetooth/hci_nokia.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
(limited to 'drivers/bluetooth/hci_nokia.c')
diff --git a/drivers/bluetooth/hci_nokia.c b/drivers/bluetooth/hci_nokia.c
index a7d687d8d456..c1b081725b2c 100644
--- a/drivers/bluetooth/hci_nokia.c
+++ b/drivers/bluetooth/hci_nokia.c
@@ -246,9 +246,9 @@ static int nokia_send_alive_packet(struct hci_uart *hu)
hci_skb_pkt_type(skb) = HCI_NOKIA_ALIVE_PKT;
memset(skb->data, 0x00, len);
- hdr = (struct hci_nokia_alive_hdr *)skb_put(skb, sizeof(*hdr));
+ hdr = skb_put(skb, sizeof(*hdr));
hdr->dlen = sizeof(*pkt);
- pkt = (struct hci_nokia_alive_pkt *)skb_put(skb, sizeof(*pkt));
+ pkt = skb_put(skb, sizeof(*pkt));
pkt->mid = NOKIA_ALIVE_REQ;
nokia_enqueue(hu, skb);
@@ -285,10 +285,10 @@ static int nokia_send_negotiation(struct hci_uart *hu)
hci_skb_pkt_type(skb) = HCI_NOKIA_NEG_PKT;
- neg_hdr = (struct hci_nokia_neg_hdr *)skb_put(skb, sizeof(*neg_hdr));
+ neg_hdr = skb_put(skb, sizeof(*neg_hdr));
neg_hdr->dlen = sizeof(*neg_cmd);
- neg_cmd = (struct hci_nokia_neg_cmd *)skb_put(skb, sizeof(*neg_cmd));
+ neg_cmd = skb_put(skb, sizeof(*neg_cmd));
neg_cmd->ack = NOKIA_NEG_REQ;
neg_cmd->baud = cpu_to_le16(baud);
neg_cmd->unused1 = 0x0000;
@@ -532,7 +532,7 @@ static int nokia_enqueue(struct hci_uart *hu, struct sk_buff *skb)
err = skb_pad(skb, 1);
if (err)
return err;
- *skb_put(skb, 1) = 0x00;
+ *(u8 *)skb_put(skb, 1) = 0x00;
}
skb_queue_tail(&btdev->txq, skb);
--
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