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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 14:29:21 +0200
committerDavid S. Miller <davem@davemloft.net>2017-06-16 11:48:39 -0400
commit4df864c1d9afb46e2461a9f808d9f11a42d31bad (patch)
tree07e7b3d16b161e0d199c5b8116df277798566e4f /net/mac80211/cfg.c
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
downloadlinux-4df864c1d9afb46e2461a9f808d9f11a42d31bad.tar.bz2
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>
Diffstat (limited to 'net/mac80211/cfg.c')
-rw-r--r--net/mac80211/cfg.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index f9eb2486d550..a354f1939e49 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1107,7 +1107,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
skb = dev_alloc_skb(sizeof(*msg));
if (!skb)
return;
- msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
+ msg = skb_put(skb, sizeof(*msg));
/* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
* Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
@@ -3414,7 +3414,7 @@ static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
skb_reserve(skb, local->hw.extra_tx_headroom);
- nullfunc = (void *) skb_put(skb, size);
+ nullfunc = skb_put(skb, size);
nullfunc->frame_control = fc;
nullfunc->duration_id = 0;
memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);