From 59ae1d127ac0ae404baf414c434ba2651b793f46 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Jun 2017 14:29:20 +0200 Subject: networking: introduce and use skb_put_data() A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- drivers/nfc/st21nfca/dep.c | 2 +- drivers/nfc/st21nfca/i2c.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/nfc/st21nfca') diff --git a/drivers/nfc/st21nfca/dep.c b/drivers/nfc/st21nfca/dep.c index 798a32bbac5d..ada7b114b6c1 100644 --- a/drivers/nfc/st21nfca/dep.c +++ b/drivers/nfc/st21nfca/dep.c @@ -564,7 +564,7 @@ int st21nfca_im_send_atr_req(struct nfc_hci_dev *hdev, u8 *gb, size_t gb_len) atr_req->ppi = ST21NFCA_LR_BITS_PAYLOAD_SIZE_254B; if (gb_len) { atr_req->ppi |= ST21NFCA_GB_BIT; - memcpy(skb_put(skb, gb_len), gb, gb_len); + skb_put_data(skb, gb, gb_len); } atr_req->length = sizeof(struct st21nfca_atr_req) + hdev->gb_len; diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c index 02a920ca07c8..94d0b913b627 100644 --- a/drivers/nfc/st21nfca/i2c.c +++ b/drivers/nfc/st21nfca/i2c.c @@ -407,7 +407,7 @@ static int st21nfca_hci_i2c_read(struct st21nfca_i2c_phy *phy, phy->current_read_len = 0; } - memcpy(skb_put(skb, len), buf, len); + skb_put_data(skb, buf, len); if (skb->data[skb->len - 1] == ST21NFCA_SOF_EOF) { phy->current_read_len = 0; -- cgit v1.2.3