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    Subject[patch 06/50] USB: add Zoom Telephonics Model 3095F V.92 USB Mini External modem to cdc-acm
    -stable review patch.  If anyone has any objections, please let us know.
    ---------------------

    From: Iain McFarlane <iain@imcfarla.homelinux.net>

    commit 6149ed5e3a6207595bd7362af7724d64f44af216 upstream

    The patch below is a necessary workaround to support the Zoom Telephonics Model 3095F V.92 USB Mini External modem, which fails to initialise properly during normal probing thus:

    May 3 22:53:00 imcfarla kernel: drivers/usb/class/cdc-acm.c: Zero length descriptor references
    May 3 22:53:00 imcfarla kernel: cdc_acm: probe of 5-2:1.0 failed with error -22

    Adding the patch below causes the probing section to be skipped, and the modem
    then initialises correctly.

    Signed-off-by: Iain McFarlane <iain@imcfarla.homelinux.net>
    Acked-by: Oliver Neukum <oneukum@suse.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
    Signed-off-by: Chris Wright <chrisw@sous-sol.org>

    ---
    drivers/usb/class/cdc-acm.c | 3 +++
    1 file changed, 3 insertions(+)

    --- a/drivers/usb/class/cdc-acm.c
    +++ b/drivers/usb/class/cdc-acm.c
    @@ -1242,6 +1242,9 @@ static struct usb_device_id acm_ids[] =
    { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */
    .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
    },
    + { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */
    + .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
    + },

    /* control interfaces with various AT-command sets */
    { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
    --


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