usb modem "Can't setup transfer"

[Hans Petter Selasky]

On 11/11/15 04:37, Alfred Perlstein wrote:
> Hello,
>
> A friend gave me a usb modem recently.  The model is:
> Multi-Tech Systems - Multi-Modem USB - MT5634ZBA
>
> The Linux driver info is here:
> ftp://ftp.multitech.com/usb/usb-linux2.txt
>
> When I plug this device into FreeBSD I get a ugen0 device.
>
> So I tried hacking into the driver itself:
>
> diff --git a/sys/dev/usb/serial/umodem.c b/sys/dev/usb/serial/umodem.c
> index c1e8812..9886294 100644
> --- a/sys/dev/usb/serial/umodem.c
> +++ b/sys/dev/usb/serial/umodem.c
> @@ -136,6 +136,7 @@ static const STRUCT_USB_HOST_ID umodem_host_devs[] = {
>          {USB_VPI(USB_VENDOR_KYOCERA, USB_PRODUCT_KYOCERA_AHK3001V, 1)},
>          {USB_VPI(USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5720, 1)},
>          {USB_VPI(USB_VENDOR_CURITEL, USB_PRODUCT_CURITEL_PC5740, 1)},
> +       {USB_VP(0x06e0, 0xf107)},
>   };
>
>   /*
>
>
> Now I get the following:
>
> Nov 10 19:19:54 spigot kernel: ugen3.3: <Multi-Tech Systems, Inc.> at
> usbus3
> Nov 10 19:19:54 spigot kernel: umodem0: <Multi-Tech Win95 Modem USB> on
> usbus3
> Nov 10 19:19:54 spigot kernel: umodem0: data interface 1, has CM over
> data, has no break
> Nov 10 19:19:54 spigot kernel: umodem0: Can't setup transfer
> Nov 10 19:19:54 spigot kernel: device_attach: umodem0 attach returned 6
>
> I read the Linux driver and it seems pretty similar, although it does
> look like they have a ton more quirks and edge cases the handle.  The
> file in Linux I'm looking at is: linux/drivers/usb/class/cdc-acm.c (this
> seems to make the most sense given the instructions given at
> ftp://ftp.multitech.com/usb/usb-linux2.txt).
>
> I tried turning on sysctl hw.usb.debug=10 however after doing so it
> didn't seem to want to probe anymore.
>
> Any ideas?
>
> I can ship this modem to someone if they are interested and have a good
> idea how to fix.

Hi,

Can you send the configuration descriptor dump:

usbconfig -d X.Y dump_device_desc dump_curr_config_desc

Maybe the modem fits into the U3G driver.

--HPS