Re: Request for assistance

Oliver Neukum <[email protected]>
Newsgroups gmane.linux.usb.devel
Organization Novell
Message-ID <[email protected]>
Am Donnerstag, 19. April 2007 14:07 schrieb Mark Glassberg:
> I installed a 2.6.21-rc7 kernel with USB_DEBUG=y and USB_NET_RNDIS_HOST=y.
> Unfortunately, my dsl modem/router is not yet installed.  Attached are the
> dmesg output, the detailed lsusb output, and the related section of the
> /proc/bus/usb/devices file.  The latter shows no driver for the device,
> but dmesg shows the device's option selected and rndis installed.  The
> cdc_ether problem noted in dmesg may be the key, but I do not know how to
> correct it.

It fails here:
	/* Microsoft ActiveSync based RNDIS devices lack the CDC descriptors,
	 * so we'll hard-wire the interfaces and not check for descriptors.
	 */
	if (is_activesync(&intf->cur_altsetting->desc) && !info->u) {
		info->control = usb_ifnum_to_if(dev->udev, 0);
		info->data = usb_ifnum_to_if(dev->udev, 1);
		if (!info->control || !info->data) {
			dev_dbg(&intf->dev,
				"activesync: master #0/%p slave #1/%p\n",
				info->control,
				info->data);
			goto bad_desc;
		}

	} else if (!info->header || !info->u || (!rndis && !info->ether)) {
		dev_dbg(&intf->dev, "missing cdc %s%s%sdescriptor\n",
			info->header ? "" : "header ",
			info->u ? "" : "union ",
			info->ether ? "" : "ether ");
		goto bad_desc;
	}

Change this:

static int is_activesync(struct usb_interface_descriptor *desc)
{
	return desc->bInterfaceClass == USB_CLASS_MISC
		&& desc->bInterfaceSubClass == 1
		&& desc->bInterfaceProtocol == 1;
}

to:

return 1;

	Regards
		Oliver
-- 
SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg)
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