diff options
Diffstat (limited to 'net/nfc/core.c')
| -rw-r--r-- | net/nfc/core.c | 55 |
1 files changed, 23 insertions, 32 deletions
diff --git a/net/nfc/core.c b/net/nfc/core.c index 3ddf6e698df0..295d129864d2 100644 --- a/net/nfc/core.c +++ b/net/nfc/core.c @@ -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); @@ -250,7 +256,7 @@ error: } int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx, - u8 comm_mode, u8 rf_mode) + u8 comm_mode, u8 rf_mode) { dev->dep_link_up = true; dev->dep_rf_mode = rf_mode; @@ -330,10 +336,8 @@ error: * * The user must wait for the callback before calling this function again. */ -int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, - struct sk_buff *skb, - data_exchange_cb_t cb, - void *cb_context) +int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb, + data_exchange_cb_t cb, void *cb_context) { int rc; @@ -357,8 +361,7 @@ error: int nfc_set_remote_general_bytes(struct nfc_dev *dev, u8 *gb, u8 gb_len) { - pr_debug("dev_name=%s gb_len=%d\n", - dev_name(&dev->dev), gb_len); + pr_debug("dev_name=%s gb_len=%d\n", dev_name(&dev->dev), gb_len); if (gb_len > NFC_MAX_GT_LEN) return -EINVAL; @@ -367,12 +370,6 @@ 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 * @@ -380,8 +377,8 @@ EXPORT_SYMBOL(nfc_get_local_general_bytes); * @gfp: gfp flags */ struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk, - unsigned int flags, unsigned int size, - unsigned int *err) + unsigned int flags, unsigned int size, + unsigned int *err) { struct sk_buff *skb; unsigned int total_size; @@ -428,25 +425,20 @@ EXPORT_SYMBOL(nfc_alloc_recv_skb); * are found. After calling this function, the device driver must stop * polling for targets. */ -int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets, - int n_targets) +int nfc_targets_found(struct nfc_dev *dev, + struct nfc_target *targets, int n_targets) { - int i; - pr_debug("dev_name=%s n_targets=%d\n", dev_name(&dev->dev), n_targets); dev->polling = false; - for (i = 0; i < n_targets; i++) - targets[i].idx = dev->target_idx++; - spin_lock_bh(&dev->targets_lock); dev->targets_generation++; kfree(dev->targets); dev->targets = kmemdup(targets, n_targets * sizeof(struct nfc_target), - GFP_ATOMIC); + GFP_ATOMIC); if (!dev->targets) { dev->n_targets = 0; @@ -506,15 +498,14 @@ struct nfc_dev *nfc_get_device(unsigned idx) * @supported_protocols: NFC protocols supported by the device */ struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops, - u32 supported_protocols, - int tx_headroom, - int tx_tailroom) + u32 supported_protocols, + int tx_headroom, int tx_tailroom) { static atomic_t dev_no = ATOMIC_INIT(0); struct nfc_dev *dev; if (!ops->start_poll || !ops->stop_poll || !ops->activate_target || - !ops->deactivate_target || !ops->data_exchange) + !ops->deactivate_target || !ops->data_exchange) return NULL; if (!supported_protocols) |