From: Oliver Neukum <oneukum@suse.com>
To: Maksim Salau <msalau@iotecha.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org
Subject: Re: [PATCH] usb: cdc_acm: Add quirk for Elatec TWN3
Date: Mon, 16 Oct 2017 13:26:18 +0200 [thread overview]
Message-ID: <1508153178.8439.13.camel@suse.com> (raw)
In-Reply-To: <1507709452-31260-1-git-send-email-msalau@iotecha.com>
Am Mittwoch, den 11.10.2017, 11:10 +0300 schrieb Maksim Salau:
> Elatec TWN3 has the union descriptor on data interface. This results in
> failure to bind the device to the driver with the following log:
> usb 1-1.2: new full speed USB device using streamplug-ehci and address 4
> usb 1-1.2: New USB device found, idVendor=09d8, idProduct=0320
> usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> usb 1-1.2: Product: RFID Device (COM)
> usb 1-1.2: Manufacturer: OEM
> cdc_acm 1-1.2:1.0: Zero length descriptor references
> cdc_acm: probe of 1-1.2:1.0 failed with error -22
>
> Adding the NO_UNION_NORMAL quirk for the device fixes the issue.
>
> Signed-off-by: Maksim Salau <msalau@iotecha.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
prev parent reply other threads:[~2017-10-16 11:30 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-11 8:10 [PATCH] usb: cdc_acm: Add quirk for Elatec TWN3 Maksim Salau
2017-10-16 11:26 ` Oliver Neukum [this message]
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