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SubjectRe: [PATCH v2 4/7] Bluetooth: Add new quirk for non-persistent setup settings
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Hi Sean,

> Add a new quirk HCI_QUIRK_NON_PERSISTENT_SETUP allowing that a quirk that
> runs setup() after every open() and not just after the first open().
>
> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> ---
> include/net/bluetooth/hci.h | 9 +++++++++
> net/bluetooth/hci_core.c | 3 ++-
> 2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
> index 1668211..b37d973 100644
> --- a/include/net/bluetooth/hci.h
> +++ b/include/net/bluetooth/hci.h
> @@ -183,6 +183,15 @@ enum {
> * during the hdev->setup vendor callback.
> */
> HCI_QUIRK_NON_PERSISTENT_DIAG,
> +
> + /* When this quirk is set, setup() would be run after every
> + * open() and not just after the first open().
> + *
> + * This quirk can be set before hci_register_dev is called or
> + * during the hdev->setup vendor callback.
> + *
> + */
> + HCI_QUIRK_NON_PERSISTENT_SETUP,
> };
>
> /* HCI device flags */
> diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
> index 40d260f..7de712e2 100644
> --- a/net/bluetooth/hci_core.c
> +++ b/net/bluetooth/hci_core.c
> @@ -1377,7 +1377,8 @@ static int hci_dev_do_open(struct hci_dev *hdev)
> atomic_set(&hdev->cmd_cnt, 1);
> set_bit(HCI_INIT, &hdev->flags);
>
> - if (hci_dev_test_flag(hdev, HCI_SETUP)) {
> + if (hci_dev_test_flag(hdev, HCI_SETUP) ||
> + test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
> hci_sock_dev_event(hdev, HCI_DEV_SETUP);

I am not 100% sure that we want to send the HCI_DEV_SETUP event also multiple times. That is a userspace change that I would need to think about. We need to check create_monitor_event() and see what the btmon trace for this looks like. Can you send me a btmon -w trace.log when this change is active.

Regards

Marcel

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