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Commit 51ad304c authored by Samuel Ortiz's avatar Samuel Ortiz
Browse files

NFC: Monitor pn533 target mode 



When receiving a DEP link down event, we should cancel all pending URBs
if we're activated as a target or if we're an initiator.

Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent 0201ed03

drivers/nfc/pn533.c

+22 −1
Original line number Diff line number Diff line
@@ -343,6 +343,7 @@ struct pn533 { 


	u8 tgt_available_prots;

	u8 tgt_active_prot;

	u8 tgt_mode;

};



struct pn533_frame {
@@ -1158,6 +1159,8 @@ static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, 
	if (params_len > 0 && params[0] != 0) {

		nfc_tm_deactivated(dev->nfc_dev);



		dev->tgt_mode = 0;



		kfree_skb(skb_resp);

		return 0;

	}
@@ -1245,6 +1248,8 @@ static int pn533_init_target_complete(struct pn533 *dev, void *arg, 
		return rc;

	}



	dev->tgt_mode = 1;



	queue_work(dev->wq, &dev->tg_work);



	return 0;
@@ -1397,6 +1402,12 @@ static int pn533_start_poll(struct nfc_dev *nfc_dev, 
		return -EBUSY;

	}



	if (dev->tgt_mode) {

		nfc_dev_err(&dev->interface->dev,

			    "Cannot poll while already being activated");

		return -EBUSY;

	}



	if (tm_protocols) {

		dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);

		if (dev->gb == NULL)
@@ -1725,7 +1736,15 @@ static int pn533_dep_link_down(struct nfc_dev *nfc_dev) 


	pn533_poll_reset_mod_list(dev);



	pn533_deactivate_target(nfc_dev, 0);

	if (dev->tgt_mode || dev->tgt_active_prot) {

		pn533_send_ack(dev, GFP_KERNEL);

		usb_kill_urb(dev->in_urb);

	}



	dev->tgt_active_prot = 0;

	dev->tgt_mode = 0;



	skb_queue_purge(&dev->resp_q);



	return 0;

}
@@ -1956,6 +1975,8 @@ static int pn533_tm_send_complete(struct pn533 *dev, void *arg, 
	if (params_len > 0 && params[0] != 0) {

		nfc_tm_deactivated(dev->nfc_dev);



		dev->tgt_mode = 0;



		return 0;

	}