From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] qmi_wwan: add support for Quectel EC21 and EC25 Date: Thu, 13 Oct 2016 10:06:58 -0400 (EDT) Message-ID: <20161013.100658.2004540239157240023.davem@davemloft.net> References: <20161010191249.23814-1-bjorn@mork.no> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: bjorn-yOkvZcmFvRU@public.gmane.org Return-path: In-Reply-To: <20161010191249.23814-1-bjorn-yOkvZcmFvRU@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org From: Bjørn Mork Date: Mon, 10 Oct 2016 21:12:49 +0200 > The Quectel EC21 and EC25 need the same "set DTR" request as devices > based on the MDM9230 chipset, but has no USB3 support. Our best guess > is that the "set DTR" functionality depends on chipset and/or > baseband firmware generation. But USB3 is still an optional feature. > > Since we cannot enable this unconditionally for all older devices, and > there doesn't appear to be anything we can use in the USB descriptors > to identify these chips, we are forced to use a device specific quirk > flag. > > Reported-and-tested-by: Sebastian Sjoholm > Signed-off-by: Bjørn Mork Applied. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html