netdev - Re: [PATCH] qmi_wwan, cdc-ether: add ADU960S

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Date:	Thu, 07 Feb 2013 10:53:10 -0600
From:	Dan Williams <dcbw@...hat.com>
To:	Bjørn Mork <bjorn@...k.no>
Cc:	linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] qmi_wwan, cdc-ether: add ADU960S

On Wed, 2013-02-06 at 20:51 +0100, Bjørn Mork wrote:
> Dan Williams <dcbw@...hat.com> writes:
> 
> > It advertises a standard CDC-ETHER interface, which actually should be
> > driven by qmi_wwan.
> >
> > Signed-off-by: Dan Williams <dcbw@...hat.com>
> > ---
> > diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
> > index 3f3d12d..cc6d0c1 100644
> > --- a/drivers/net/usb/cdc_ether.c
> > +++ b/drivers/net/usb/cdc_ether.c
> > @@ -615,6 +615,13 @@ static const struct usb_device_id	products [] = {
> >  	.driver_info = 0,
> >  },
> >  
> > +/* AnyDATA ADU960S - handled by qmi_wwan */
> > +{
> > +	USB_DEVICE_AND_INTERFACE_INFO(0x16d5, 0x650a, USB_CLASS_COMM,
> > +			USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
> > +	.driver_info = 0,
> > +},
> > +
> >  /*
> >   * WHITELIST!!!
> >   *
> > diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
> > index 6a1ca50..2b5ea32 100644
> > --- a/drivers/net/usb/qmi_wwan.c
> > +++ b/drivers/net/usb/qmi_wwan.c
> > @@ -459,6 +459,7 @@ static const struct usb_device_id products[] = {
> >  	{QMI_FIXED_INTF(0x1199, 0x68a2, 19)},	/* Sierra Wireless MC7710 in QMI mode */
> >  	{QMI_FIXED_INTF(0x1199, 0x901c, 8)},    /* Sierra Wireless EM7700 */
> >  	{QMI_FIXED_INTF(0x1bbb, 0x011e, 4)},	/* Telekom Speedstick LTE II (Alcatel One Touch L100V LTE) */
> > +	{QMI_FIXED_INTF(0x16d5, 0x650a, 8)},	/* AnyDATA ADU960S */
> >  
> >  	/* 4. Gobi 1000 devices */
> >  	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */
> 
> 
> Just thinking....
> 
> Maybe we should use USB_DEVICE_AND_INTERFACE_INFO() in qmi_wwan as well
> for these devices?  The only reason we match on interface number for
> most devices in that driver is because those devices use ff/ff/ff for
> multiple different functions.  When the function is uniquely identified
> using class/subclass/protocol as here, then I believe it makes more
> sense to use those values. And it creates a symmetry between the
> cdc_ether and the qmi_wwan entries, making the connection between them
> clearer.

Ok, I'll resubmit with DEVICE_AND_INTERFACE_INFO in qmi_wwan.

Dan

> Not to mention that such symmetry prevents us from ending up with no
> driver supporting the device if some firmware upgrade happened to change
> the interface number..
> 
> 
> Bjørn
> --
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