From d22b2db69035ae3b8f71a58dfe0bd10ae1ee58d5 Mon Sep 17 00:00:00 2001 From: Waldemar Rymarkiewicz Date: Mon, 26 Nov 2012 14:18:37 +0100 Subject: [PATCH] NFC: pn533: Add pn533_alloc_skb for req allocation Allocate sk_buff for the request. Signed-off-by: Waldemar Rymarkiewicz Signed-off-by: Samuel Ortiz --- drivers/nfc/pn533.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c index 94c88bb601cd..c34acd0dc5ff 100644 --- a/drivers/nfc/pn533.c +++ b/drivers/nfc/pn533.c @@ -1062,6 +1062,20 @@ static void pn533_send_complete(struct urb *urb) } } +static struct sk_buff *pn533_alloc_skb(unsigned int size) +{ + struct sk_buff *skb; + + skb = alloc_skb(PN533_FRAME_HEADER_LEN + + size + + PN533_FRAME_TAIL_LEN, GFP_KERNEL); + + if (skb) + skb_reserve(skb, PN533_FRAME_HEADER_LEN); + + return skb; +} + struct pn533_target_type_a { __be16 sens_res; u8 sel_res; @@ -2390,15 +2404,11 @@ static void pn533_wq_mi_recv(struct work_struct *work) nfc_dev_dbg(&dev->interface->dev, "%s", __func__); /* This is a zero payload size skb */ - skb_cmd = alloc_skb(PN533_FRAME_HEADER_LEN + - PN533_CMD_DATAEXCH_HEAD_LEN + - PN533_FRAME_TAIL_LEN, - GFP_KERNEL); + skb_cmd = pn533_alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN); if (skb_cmd == NULL) goto error_cmd; - skb_reserve(skb_cmd, - PN533_FRAME_HEADER_LEN + PN533_CMD_DATAEXCH_HEAD_LEN); + skb_reserve(skb_cmd, PN533_CMD_DATAEXCH_HEAD_LEN); rc = pn533_build_tx_frame(dev, skb_cmd, true); if (rc) -- 2.20.1