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Date:   Wed, 18 Mar 2020 12:26:10 +0100
From:   Marcel Holtmann <>
To:     Manish Mandlik <>
Cc:     Yoni Shavit <>,
        Alain Michaud <>,
        Miao-chen Chou <>,,
        Dmitry Grinberg <>,
        "David S. Miller" <>,
        Johan Hedberg <>,,,
        Jakub Kicinski <>
Subject: Re: [PATCH] Bluetooth: Do not cancel advertising when starting a scan

Hi Manish,

> BlueZ cancels adv when starting a scan, but does not cancel a scan when
> starting to adv. Neither is required, so this brings both to a
> consistent state (of not affecting each other). Some very rare (I've
> never seen one) BT 4.0 chips will fail to do both at once. Even this is
> ok since the command that will fail will be the second one, and thus the
> common sense logic of first-come-first-served is preserved for BLE
> requests.
> Signed-off-by: Dmitry Grinberg <>
> Signed-off-by: Manish Mandlik <>
> ---
> net/bluetooth/hci_request.c | 17 -----------------
> 1 file changed, 17 deletions(-)

patch has been applied to bluetooth-next tree.

If you know the controller that doesn’t support this, can we blacklist that one and just disable advertising (peripheral mode) for that controller.



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