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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 /drivers/nfc/st21nfca
parent59ae1d127ac0ae404baf414c434ba2651b793f46 (diff)
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 'drivers/nfc/st21nfca')
-rw-r--r--drivers/nfc/st21nfca/i2c.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c
index 94d0b913b627..c36f0e0afdfd 100644
--- a/drivers/nfc/st21nfca/i2c.c
+++ b/drivers/nfc/st21nfca/i2c.c
@@ -177,10 +177,10 @@ static void st21nfca_hci_add_len_crc(struct sk_buff *skb)
crc = ~crc;
tmp = crc & 0x00ff;
- *skb_put(skb, 1) = tmp;
+ *(u8 *)skb_put(skb, 1) = tmp;
tmp = (crc >> 8) & 0x00ff;
- *skb_put(skb, 1) = tmp;
+ *(u8 *)skb_put(skb, 1) = tmp;
}
static void st21nfca_hci_remove_len_crc(struct sk_buff *skb)
@@ -214,7 +214,7 @@ static int st21nfca_hci_i2c_write(void *phy_id, struct sk_buff *skb)
st21nfca_hci_add_len_crc(skb);
/* add ST21NFCA_SOF_EOF on tail */
- *skb_put(skb, 1) = ST21NFCA_SOF_EOF;
+ *(u8 *)skb_put(skb, 1) = ST21NFCA_SOF_EOF;
/* add ST21NFCA_SOF_EOF on head */
*skb_push(skb, 1) = ST21NFCA_SOF_EOF;