diff options
| author | Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com> | 2014-05-14 13:43:04 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-05-16 06:48:06 +0200 |
| commit | f7faab0c9d47f7d3fb25db42eff08497131ec8ba (patch) | |
| tree | 81ef05d10aacb5860cc6f88eae66634c1d80d280 /net/bluetooth | |
| parent | Bluetooth: Add support to get connection information (diff) | |
| download | linux-f7faab0c9d47f7d3fb25db42eff08497131ec8ba.tar.xz linux-f7faab0c9d47f7d3fb25db42eff08497131ec8ba.zip | |
Bluetooth: Avoid polling TX power for LE links
TX power for LE links is immutable thus we do not need to query for it
if already have value.
Signed-off-by: Andrzej Kaczmarek <andrzej.kaczmarek@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/mgmt.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 0e5a316fafbf..664dbc4eccbe 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4717,10 +4717,16 @@ static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data, hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp), &req_rssi_cp); - req_txp_cp.handle = cpu_to_le16(conn->handle); - req_txp_cp.type = 0x00; - hci_req_add(&req, HCI_OP_READ_TX_POWER, - sizeof(req_txp_cp), &req_txp_cp); + /* For LE links TX power does not change thus we don't need to + * query for it once value is known. + */ + if (!bdaddr_type_is_le(cp->addr.type) || + conn->tx_power == HCI_TX_POWER_INVALID) { + req_txp_cp.handle = cpu_to_le16(conn->handle); + req_txp_cp.type = 0x00; + hci_req_add(&req, HCI_OP_READ_TX_POWER, + sizeof(req_txp_cp), &req_txp_cp); + } err = hci_req_run(&req, conn_info_refresh_complete); if (err < 0) |