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| author | Loic Poulain <loic.poulain@intel.com> | 2015-09-29 15:05:44 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-29 15:16:11 +0200 |
| commit | fbef168fec837ae26c8725737cd4b49dc8a0f917 (patch) | |
| tree | 9438808c0c9d42566a84c082401f94cdbd629b6f /net/bluetooth/hci_core.c | |
| parent | a913718812d5998b3af2b6d6b5f0be4a09caebb1 (diff) | |
| download | linux-next-fbef168fec837ae26c8725737cd4b49dc8a0f917.tar.gz | |
Bluetooth: Add hci_cmd_sync function
Send a HCI command and wait for command complete event.
This function serializes the requests by grabbing the req_lock.
Signed-off-by: Loic Poulain <loic.poulain@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth/hci_core.c')
| -rw-r--r-- | net/bluetooth/hci_core.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index a7cdd99ec3f1..79356469c377 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3580,6 +3580,25 @@ void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; } +/* Send HCI command and wait for command commplete event */ +struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, + const void *param, u32 timeout) +{ + struct sk_buff *skb; + + if (!test_bit(HCI_UP, &hdev->flags)) + return ERR_PTR(-ENETDOWN); + + bt_dev_dbg(hdev, "opcode 0x%4.4x plen %d", opcode, plen); + + hci_req_lock(hdev); + skb = __hci_cmd_sync(hdev, opcode, plen, param, timeout); + hci_req_unlock(hdev); + + return skb; +} +EXPORT_SYMBOL(hci_cmd_sync); + /* Send ACL data */ static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) { |