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/nfc/fdp/i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/nfc/fdp/i2c.c') diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c index 0877e2283f35..97f003e84381 100644 --- a/drivers/nfc/fdp/i2c.c +++ b/drivers/nfc/fdp/i2c.c @@ -86,7 +86,7 @@ static void fdp_nci_i2c_add_len_lrc(struct sk_buff *skb) for (i = 0; i < len + 2; i++) lrc ^= skb->data[i]; - *skb_put(skb, 1) = lrc; + *(u8 *)skb_put(skb, 1) = lrc; } static void fdp_nci_i2c_remove_len_lrc(struct sk_buff *skb) -- cgit v1.2.3