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Commit e4878823 authored by Waldemar Rymarkiewicz's avatar Waldemar Rymarkiewicz Committed by Samuel Ortiz
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NFC: pn533: Del frame logic from TgGet/SetData cmd 



Remove frame logic from TgSetData and TgGetData commands
using the new iface for async send.

Signed-off-by: default avatarWaldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 1727cf93

drivers/nfc/pn533.c

+33 −64
Original line number Diff line number Diff line
@@ -1450,65 +1450,46 @@ static int pn533_init_target_frame(struct pn533_frame *frame, 
#define PN533_CMD_DATAEXCH_HEAD_LEN 1

#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262

static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,

				      u8 *params, int params_len)

				      struct sk_buff *resp)

{

	struct sk_buff *skb_resp = arg;

	struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data;

	u8 status;



	nfc_dev_dbg(&dev->interface->dev, "%s", __func__);



	if (params_len < 0) {

		nfc_dev_err(&dev->interface->dev,

			    "Error %d when starting as a target",

			    params_len);

	if (IS_ERR(resp))

		return PTR_ERR(resp);



		return params_len;

	}

	status = resp->data[0];

	skb_pull(resp, sizeof(status));



	if (params_len > 0 && params[0] != 0) {

	if (status != 0) {

		nfc_tm_deactivated(dev->nfc_dev);



		dev->tgt_mode = 0;



		kfree_skb(skb_resp);

		dev_kfree_skb(resp);

		return 0;

	}



	skb_put(skb_resp, PN533_FRAME_SIZE(in_frame));

	skb_pull(skb_resp,

		 PN533_FRAME_HEADER_LEN + PN533_CMD_DATAEXCH_HEAD_LEN);

	skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_LEN);



	return nfc_tm_data_received(dev->nfc_dev, skb_resp);

	return nfc_tm_data_received(dev->nfc_dev, resp);

}



static void pn533_wq_tg_get_data(struct work_struct *work)

{

	struct pn533 *dev = container_of(work, struct pn533, tg_work);

	struct pn533_frame *in_frame;

	struct sk_buff *skb_resp;

	size_t skb_resp_len;



	nfc_dev_dbg(&dev->interface->dev, "%s", __func__);

	struct sk_buff *skb;

	int rc;



	skb_resp_len = PN533_FRAME_HEADER_LEN +

		       PN533_CMD_DATAEXCH_HEAD_LEN +

		       PN533_CMD_DATAEXCH_DATA_MAXLEN +

		       PN533_FRAME_TAIL_LEN;

	nfc_dev_dbg(&dev->interface->dev, "%s", __func__);



	skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL);

	if (!skb_resp)

	skb = pn533_alloc_skb(0);

	if (!skb)

		return;



	in_frame = (struct pn533_frame *)skb_resp->data;



	pn533_tx_frame_init(dev->out_frame, PN533_CMD_TG_GET_DATA);

	pn533_tx_frame_finish(dev->out_frame);

	rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,

				   pn533_tm_get_data_complete, NULL);



	pn533_send_cmd_frame_async(dev, dev->out_frame, in_frame,

				   skb_resp_len,

				   pn533_tm_get_data_complete,

				   skb_resp);

	if (rc < 0)

		dev_kfree_skb(skb);



	return;

}
@@ -2280,23 +2261,20 @@ error: 
}



static int pn533_tm_send_complete(struct pn533 *dev, void *arg,

				  u8 *params, int params_len)

				  struct sk_buff *resp)

{

	struct sk_buff *skb_out = arg;

	u8 status;



	nfc_dev_dbg(&dev->interface->dev, "%s", __func__);



	dev_kfree_skb(skb_out);

	if (IS_ERR(resp))

		return PTR_ERR(resp);



	if (params_len < 0) {

		nfc_dev_err(&dev->interface->dev,

			    "Error %d when sending data",

			    params_len);

	status = resp->data[0];



		return params_len;

	}

	dev_kfree_skb(resp);



	if (params_len > 0 && params[0] != 0) {

	if (status != 0) {

		nfc_tm_deactivated(dev->nfc_dev);



		dev->tgt_mode = 0;
@@ -2312,30 +2290,21 @@ static int pn533_tm_send_complete(struct pn533 *dev, void *arg, 
static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)

{

	struct pn533 *dev = nfc_get_drvdata(nfc_dev);

	struct pn533_frame *out_frame;

	int rc;



	nfc_dev_dbg(&dev->interface->dev, "%s", __func__);



	rc = pn533_build_tx_frame(dev, skb, false);

	if (rc)

		goto error;



	out_frame = (struct pn533_frame *) skb->data;



	rc = pn533_send_cmd_frame_async(dev, out_frame, dev->in_frame,

					PN533_NORMAL_FRAME_MAX_LEN,

					pn533_tm_send_complete, skb);

	if (rc) {

	if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {

		nfc_dev_err(&dev->interface->dev,

			    "Error %d when trying to send data", rc);

		goto error;

			    "Data length greater than the max allowed: %d",

			    PN533_CMD_DATAEXCH_DATA_MAXLEN);

		return -ENOSYS;

	}



	return 0;



error:

	kfree_skb(skb);

	rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,

				   pn533_tm_send_complete, NULL);

	if (rc < 0)

		dev_kfree_skb(skb);



	return rc;

}