From d58ff35122847a83ba55394e2ae3a1527b6febf5 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:23 +0200 Subject: 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 Signed-off-by: David S. Miller --- drivers/nfc/st-nci/ndlc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/nfc/st-nci') diff --git a/drivers/nfc/st-nci/ndlc.c b/drivers/nfc/st-nci/ndlc.c index 50880d747b02..9477994cf975 100644 --- a/drivers/nfc/st-nci/ndlc.c +++ b/drivers/nfc/st-nci/ndlc.c @@ -87,7 +87,7 @@ int ndlc_send(struct llt_ndlc *ndlc, struct sk_buff *skb) u8 pcb = PCB_TYPE_DATAFRAME | PCB_DATAFRAME_RETRANSMIT_NO | PCB_FRAME_CRC_INFO_NOTPRESENT; - *skb_push(skb, 1) = pcb; + *(u8 *)skb_push(skb, 1) = pcb; skb_queue_tail(&ndlc->send_q, skb); schedule_work(&ndlc->sm_work); -- cgit