linux-kernel - Re: [PATCH 2/2] usb: quirks: Add reset-resume quirk for Dell DW1820 QCA Rome Bluetooth

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Message-Id: <446583FE-6E63-47A0-921B-6FF2EC9C452C@holtmann.org>
Date:   Thu, 28 Dec 2017 21:15:43 +0100
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org,
        "open list:BLUETOOTH DRIVERS" <linux-bluetooth@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>,
        Leif Liddy <leif.linux@...il.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Brian Norris <briannorris@...omium.org>,
        Daniel Drake <drake@...lessm.com>
Subject: Re: [PATCH 2/2] usb: quirks: Add reset-resume quirk for Dell DW1820
 QCA Rome Bluetooth

Hi Kai-Heng,

> Commit ("fd865802c66bc451dc515ed89360f84376ce1a56 Bluetooth: btusb: fix
> QCA Rome suspend/resume") enables reset_resume in btusb_probe(). This
> makes the device resets during btusb_open(), firmware loading gets
> interrupted as a result.
> 
> We still want to reset the device to solve the original issue, but we
> should do it before btusb_open().
> 
> Hence, add reset-resume quirk in usb core intead of btusb.
> 
> Cc: stable@...r.kernel.org
> Cc: Leif Liddy <leif.linux@...il.com>
> Cc: Matthias Kaehlcke <mka@...omium.org>
> Cc: Brian Norris <briannorris@...omium.org>
> Cc: Daniel Drake <drake@...lessm.com>
> Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
> 
> ---
> drivers/usb/core/quirks.c | 3 +++
> 1 file changed, 3 insertions(+)

patch has been applied to bluetooth-next tree.

Regards

Marcel