[Bug 219387] Bluetooth: hci0: Reading supported features failed (-16)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219387

--- Comment #8 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
The error is logged by `btintel_read_debug_features()` in
`drivers/bluetooth/btintel.c`.

```
static int btintel_read_debug_features(struct hci_dev *hdev,
                                       struct intel_debug_features *features)
{
        struct sk_buff *skb; 
        u8 page_no = 1;

        /* Intel controller supports two pages, each page is of 128-bit
         * feature bit mask. And each bit defines specific feature support
         */
        skb = __hci_cmd_sync(hdev, 0xfca6, sizeof(page_no), &page_no,
                             HCI_INIT_TIMEOUT);
        if (IS_ERR(skb)) {
                bt_dev_err(hdev, "Reading supported features failed (%ld)",
                           PTR_ERR(skb));
                return PTR_ERR(skb);
        }

[…]
}
```

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