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Date:   Mon, 5 Oct 2020 13:14:24 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Vincent Mailhol <mailhol.vincent@...adoo.fr>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        linux-can@...r.kernel.org, Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S . Miller" <davem@...emloft.net>,
        Oliver Neukum <oneukum@...e.com>, linux-usb@...r.kernel.org,
        Jakub Kicinski <kuba@...nel.org>,
        Arunachalam Santhanam <arunachalam.santhanam@...bosch.com>,
        Masahiro Yamada <masahiroy@...nel.org>
Subject: Re: [PATCH v3 7/7] usb: cdc-acm: add quirk to blacklist ETAS ES58X
 devices

On Sat, Oct 03, 2020 at 12:41:51AM +0900, Vincent Mailhol wrote:
> The ES58X devices has a CDC ACM interface (used for debug
> purpose). During probing, the device is thus recognized as USB Modem
> (CDC ACM), preventing the etas-es58x module to load:
>   usbcore: registered new interface driver etas_es58x
>   usb 1-1.1: new full-speed USB device number 14 using xhci_hcd
>   usb 1-1.1: New USB device found, idVendor=108c, idProduct=0159, bcdDevice= 1.00
>   usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>   usb 1-1.1: Product: ES581.4
>   usb 1-1.1: Manufacturer: ETAS GmbH
>   usb 1-1.1: SerialNumber: 2204355
>   cdc_acm 1-1.1:1.0: No union descriptor, testing for castrated device
>   cdc_acm 1-1.1:1.0: ttyACM0: USB ACM device
> 
> Thus, these have been added to the ignore list in
> drivers/usb/class/cdc-acm.c
> 
> N.B. Future firmware release of the ES58X will remove the CDC-ACM
> interface.

I'll queue this up now, as it's needed no matter what the status of the
other patches in this series.

thanks,

greg k-h

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