diff options
| author | Eric Lapuyade <eric.lapuyade@linux.intel.com> | 2012-09-11 10:43:50 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-09-25 00:17:25 +0200 |
| commit | f3e8fb552789f4845e60b11c47b676d14b9488e5 (patch) | |
| tree | 8fde55db141d361952cbb190d9e59231e143157b /include | |
| parent | e4c4789e55327e5f2bd6cafcccd46f9b6251bbc3 (diff) | |
NFC: Modified hci_transceive to become an asynchronous operation
This enables the completion callback to be called from a different
context, preventing a possible deadlock if the callback resulted in the
invocation of a nested call to the currently locked nfc_dev.
This is also more in line with the im_transceive nfc_ops for NFC Core or
NCI drivers which already behave asynchronously.
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/nfc/hci.h | 8 | ||||
| -rw-r--r-- | include/net/nfc/shdlc.h | 4 |
2 files changed, 8 insertions, 4 deletions
diff --git a/include/net/nfc/hci.h b/include/net/nfc/hci.h index 54ba2caab4a..6cee6e21fc4 100644 --- a/include/net/nfc/hci.h +++ b/include/net/nfc/hci.h @@ -38,8 +38,8 @@ struct nfc_hci_ops { int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate, struct nfc_target *target); int (*data_exchange) (struct nfc_hci_dev *hdev, - struct nfc_target *target, - struct sk_buff *skb, struct sk_buff **res_skb); + struct nfc_target *target, struct sk_buff *skb, + data_exchange_cb_t cb, void *cb_context); int (*check_presence)(struct nfc_hci_dev *hdev, struct nfc_target *target); }; @@ -103,6 +103,10 @@ struct nfc_hci_dev { u8 hw_mpw; u8 hw_software; u8 hw_bsid; + + int async_cb_type; + data_exchange_cb_t async_cb; + void *async_cb_context; }; /* hci device allocation */ diff --git a/include/net/nfc/shdlc.h b/include/net/nfc/shdlc.h index 34242736298..fe5e1982935 100644 --- a/include/net/nfc/shdlc.h +++ b/include/net/nfc/shdlc.h @@ -34,8 +34,8 @@ struct nfc_shdlc_ops { int (*complete_target_discovered) (struct nfc_shdlc *shdlc, u8 gate, struct nfc_target *target); int (*data_exchange) (struct nfc_shdlc *shdlc, - struct nfc_target *target, - struct sk_buff *skb, struct sk_buff **res_skb); + struct nfc_target *target, struct sk_buff *skb, + data_exchange_cb_t cb, void *cb_context); int (*check_presence)(struct nfc_shdlc *shdlc, struct nfc_target *target); }; |