[PATCH 09/13] Bluetooth: hci_sync: Add __hci_reset_sync() for device driver

[Zijun Hu <zijun.hu@oss.qualcomm.com>]

Many vendor drivers have requirements to send a raw HCI reset
synchronously with HCI_INIT_TIMEOUT.

Add a dedicated API for them to use.

Signed-off-by: Zijun Hu <zijun.hu@oss.qualcomm.com>
---
 include/net/bluetooth/hci_sync.h |  1 +
 net/bluetooth/hci_sync.c         | 14 ++++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h
index 73e494b2591d..7005fc9f257a 100644
--- a/include/net/bluetooth/hci_sync.h
+++ b/include/net/bluetooth/hci_sync.h
@@ -59,6 +59,7 @@ int __hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen,
 int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
 			     const void *param, u8 event, u32 timeout,
 			     struct sock *sk);
+int __hci_reset_sync(struct hci_dev *hdev);
 int hci_cmd_sync_status(struct hci_dev *hdev, u16 opcode, u32 plen,
 			const void *param, u32 timeout);
 
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 601d44ef975f..40c9725585cb 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3684,6 +3684,20 @@ int hci_reset_sync(struct hci_dev *hdev)
 	return -bt_to_errno(err);
 }
 
+/* Send a raw HCI reset for use by vendor drivers */
+int __hci_reset_sync(struct hci_dev *hdev)
+{
+	int err;
+
+	err = __hci_cmd_sync_status(hdev, HCI_OP_RESET, 0, NULL,
+				    HCI_INIT_TIMEOUT);
+	if (err < 0)
+		return err;
+
+	return -bt_to_errno(err);
+}
+EXPORT_SYMBOL(__hci_reset_sync);
+
 static int hci_init0_sync(struct hci_dev *hdev)
 {
 	int err;

-- 
2.34.1