linux-kernel - Re: 回复: [PATCH] USB: serial: option: add Quectel EM060K modem

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Message-ID: <Yuovy5ukT9V1ydKS@hovoldconsulting.com>
Date:   Wed, 3 Aug 2022 10:20:27 +0200
From:   Johan Hovold <johan@...nel.org>
To:     谭 永林 <yonglin.tan@...look.com>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 回复: [PATCH] USB: serial:
 option: add Quectel EM060K modem

On Sat, Jul 30, 2022 at 07:32:47AM +0000, 谭 永林 wrote:

> The last interface is used for Qualcomm WWAN module's QDSS(Qualcomm
> Debug Sub-System) port. Users use the QDSS interface to acquire Modem
> subsystem log. It is used to work with DIAG port. Therefore, we don't
> have to bind this interface with any driver.

Thanks for the details (I can add QDSS to the summary of the interface
layout in the commit message when applying).

But are you saying that it's not needed because that data is available
also over the DIAG port? Or is there some libusb driver that should be
used to access the QDSS port?

Johan