Bluetooth: Add shutdown callback before closing the device

This callback allows a vendor to send the vendor specific commands
before cloing the hci interface.

Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

2 files changed, 7 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 52863c3e0b13..5f1ca3359c1a 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -373,6 +373,7 @@ struct hci_dev {
         int (*close)(struct hci_dev *hdev);
         int (*flush)(struct hci_dev *hdev);
         int (*setup)(struct hci_dev *hdev);
+        int (*shutdown)(struct hci_dev *hdev);
         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
         void (*notify)(struct hci_dev *hdev, unsigned int evt);
         void (*hw_error)(struct hci_dev *hdev, u8 code);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 3322d3f4c85a..4135a4406aed 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1591,6 +1591,12 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 {
         BT_DBG("%s %p", hdev->name, hdev);
 
+        if (!test_bit(HCI_UNREGISTER, &hdev->dev_flags)) {
+                /* Execute vendor specific shutdown routine */
+                if (hdev->shutdown)
+                        hdev->shutdown(hdev);
+        }
+
         cancel_delayed_work(&hdev->power_off);
 
         hci_req_cancel(hdev, ENODEV);