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authorJohannes Berg <johannes.berg@intel.com>2017-06-16 15:29:23 +0300
committerDavid S. Miller <davem@davemloft.net>2017-06-16 18:48:40 +0300
commitd58ff35122847a83ba55394e2ae3a1527b6febf5 (patch)
treee1ecf758e86519922c403f1aa88f19ef25a554ad /drivers/net/wireless/admtek
parentaf72868b9070d1b843c829f0d0d0b22c04a20815 (diff)
downloadlinux-d58ff35122847a83ba55394e2ae3a1527b6febf5.tar.xz
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 <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/wireless/admtek')
-rw-r--r--drivers/net/wireless/admtek/adm8211.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/admtek/adm8211.c b/drivers/net/wireless/admtek/adm8211.c
index 5f64f3928c35..3b0802fc5bf5 100644
--- a/drivers/net/wireless/admtek/adm8211.c
+++ b/drivers/net/wireless/admtek/adm8211.c
@@ -1700,7 +1700,7 @@ static void adm8211_tx(struct ieee80211_hw *dev,
skb_pull(skb, hdrlen);
payload_len = skb->len;
- txhdr = (struct adm8211_tx_hdr *) skb_push(skb, sizeof(*txhdr));
+ txhdr = skb_push(skb, sizeof(*txhdr));
memset(txhdr, 0, sizeof(*txhdr));
memcpy(txhdr->da, ieee80211_get_DA(hdr), ETH_ALEN);
txhdr->signal = plcp_signal;