diff options
| author | Samuel Ortiz <sameo@linux.intel.com> | 2012-05-31 20:01:32 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-06-04 21:34:34 +0200 |
| commit | 51ad304cc8db5589d1e7b0a9df3858381753d788 (patch) | |
| tree | 352608624988d0bbc1262896cc1094c8b25e7f2f /drivers | |
| parent | NFC: Convert pn533 from semaphore to mutex (diff) | |
| download | linux-51ad304cc8db5589d1e7b0a9df3858381753d788.tar.xz linux-51ad304cc8db5589d1e7b0a9df3858381753d788.zip | |
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: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/nfc/pn533.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c index 58c1641cf658..9ac829e22e73 100644 --- a/drivers/nfc/pn533.c +++ b/drivers/nfc/pn533.c @@ -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; } |