ST21NFCA_FRAME_HEADROOM 175 drivers/nfc/st21nfca/i2c.c skb_pull(skb, ST21NFCA_FRAME_HEADROOM); ST21NFCA_FRAME_HEADROOM 560 drivers/nfc/st21nfca/i2c.c ST21NFCA_FRAME_HEADROOM,