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Commit 47807d3d authored by Samuel Ortiz's avatar Samuel Ortiz Committed by John W. Linville
Browse files

NFC: Remove the rf mode parameter from the DEP link up routine 



When calling nfc_dep_link_up, we implicitely are in initiator mode.
Which means we also can provide the general bytes as a function argument,
as all drivers will eventually request them.

Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9dda50f4

drivers/nfc/pn533.c

+5 −15
Original line number Diff line number Diff line
@@ -1340,21 +1340,15 @@ static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, 
}



static int pn533_dep_link_up(struct nfc_dev *nfc_dev, int target_idx,

						u8 comm_mode, u8 rf_mode)

			     u8 comm_mode, u8* gb, size_t gb_len)

{

	struct pn533 *dev = nfc_get_drvdata(nfc_dev);

	struct pn533_cmd_jump_dep *cmd;

	u8 cmd_len, local_gt_len, *local_gt;

	u8 cmd_len;

	int rc;



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



	if (rf_mode == NFC_RF_TARGET) {

		nfc_dev_err(&dev->interface->dev, "Target mode not supported");

		return -EOPNOTSUPP;

	}





	if (dev->poll_mod_count) {

		nfc_dev_err(&dev->interface->dev,

				"Cannot bring the DEP link up while polling");
@@ -1367,11 +1361,7 @@ static int pn533_dep_link_up(struct nfc_dev *nfc_dev, int target_idx, 
		return -EBUSY;

	}



	local_gt = nfc_get_local_general_bytes(dev->nfc_dev, &local_gt_len);

	if (local_gt_len > NFC_MAX_GT_LEN)

		return -EINVAL;



	cmd_len = sizeof(struct pn533_cmd_jump_dep) + local_gt_len;

	cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len;

	cmd = kzalloc(cmd_len, GFP_KERNEL);

	if (cmd == NULL)

		return -ENOMEM;
@@ -1380,9 +1370,9 @@ static int pn533_dep_link_up(struct nfc_dev *nfc_dev, int target_idx, 


	cmd->active = !comm_mode;

	cmd->baud = 0;

	if (local_gt != NULL) {

	if (gb != NULL && gb_len > 0) {

		cmd->next = 4; /* We have some Gi */

		memcpy(cmd->gt, local_gt, local_gt_len);

		memcpy(cmd->gt, gb, gb_len);

	} else {

		cmd->next = 0;

	}

include/net/nfc/nfc.h

+2 −4
Original line number Diff line number Diff line
@@ -53,8 +53,8 @@ struct nfc_ops { 
	int (*dev_down)(struct nfc_dev *dev);

	int (*start_poll)(struct nfc_dev *dev, u32 protocols);

	void (*stop_poll)(struct nfc_dev *dev);

	int (*dep_link_up)(struct nfc_dev *dev, int target_idx,

				u8 comm_mode, u8 rf_mode);

	int (*dep_link_up)(struct nfc_dev *dev, int target_idx, u8 comm_mode,

			   u8 *gb, size_t gb_len);

	int (*dep_link_down)(struct nfc_dev *dev);

	int (*activate_target)(struct nfc_dev *dev, u32 target_idx,

							u32 protocol);
@@ -179,8 +179,6 @@ struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp); 
int nfc_set_remote_general_bytes(struct nfc_dev *dev,

					u8 *gt, u8 gt_len);



u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, u8 *gt_len);



int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets,

							int ntargets);

net/nfc/core.c

+11 −11
Original line number Diff line number Diff line
@@ -181,13 +181,13 @@ error: 
	return rc;

}



int nfc_dep_link_up(struct nfc_dev *dev, int target_index,

					u8 comm_mode, u8 rf_mode)

int nfc_dep_link_up(struct nfc_dev *dev, int target_index, u8 comm_mode)

{

	int rc = 0;

	u8 *gb;

	size_t gb_len;



	pr_debug("dev_name=%s comm:%d rf:%d\n",

			dev_name(&dev->dev), comm_mode, rf_mode);

	pr_debug("dev_name=%s comm %d\n", dev_name(&dev->dev), comm_mode);



	if (!dev->ops->dep_link_up)

		return -EOPNOTSUPP;
@@ -204,7 +204,13 @@ int nfc_dep_link_up(struct nfc_dev *dev, int target_index, 
		goto error;

	}



	rc = dev->ops->dep_link_up(dev, target_index, comm_mode, rf_mode);

	gb = nfc_llcp_general_bytes(dev, &gb_len);

	if (gb_len > NFC_MAX_GT_LEN) {

		rc = -EINVAL;

		goto error;

	}



	rc = dev->ops->dep_link_up(dev, target_index, comm_mode, gb, gb_len);



error:

	device_unlock(&dev->dev);
@@ -367,12 +373,6 @@ int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len) 
}

EXPORT_SYMBOL(nfc_set_remote_general_bytes);



u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, u8 *gt_len)

{

	return nfc_llcp_general_bytes(dev, gt_len);

}

EXPORT_SYMBOL(nfc_get_local_general_bytes);



/**

 * nfc_alloc_send_skb - allocate a skb for data exchange responses

 *

net/nfc/llcp/llcp.c

+1 −1
Original line number Diff line number Diff line
@@ -281,7 +281,7 @@ void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap) 
	mutex_unlock(&local->sdp_lock);

}



u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, u8 *general_bytes_len)

u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len)

{

	struct nfc_llcp_local *local;

net/nfc/netlink.c

+3 −8
Original line number Diff line number Diff line
@@ -542,13 +542,12 @@ static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) 
	struct nfc_dev *dev;

	int rc, tgt_idx;

	u32 idx;

	u8 comm, rf;

	u8 comm;



	pr_debug("DEP link up\n");



	if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||

			!info->attrs[NFC_ATTR_COMM_MODE] ||

			!info->attrs[NFC_ATTR_RF_MODE])

	    !info->attrs[NFC_ATTR_COMM_MODE])

		return -EINVAL;



	idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
@@ -558,19 +557,15 @@ static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info) 
		tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);



	comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);

	rf = nla_get_u8(info->attrs[NFC_ATTR_RF_MODE]);



	if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)

		return -EINVAL;



	if (rf != NFC_RF_INITIATOR && comm != NFC_RF_TARGET)

		return -EINVAL;



	dev = nfc_get_device(idx);

	if (!dev)

		return -ENODEV;



	rc = nfc_dep_link_up(dev, tgt_idx, comm, rf);

	rc = nfc_dep_link_up(dev, tgt_idx, comm);



	nfc_put_device(dev);