Re: [PATCH] USB: serial: option: add support for D-Link DWM-157 C1

[Johan Hovold <johan@kernel.org>]

On Mon, Aug 21, 2017 at 05:43:46PM +0200, Maciej S. Szmigiero wrote:
> This commit adds support (IDs, really) for D-Link DWM-157 hardware version
> C1 USB modem to option driver.
> 
> According to manufacturer-provided Windows INF file the device has four
> serial ports:
> "D-Link HSPA+DataCard Diagnostics Interface" (interface 2; modem port),
> "D-Link HSPA+DataCard NMEA Device" (interface 3),
> "D-Link HSPA+DataCard Speech Port" (interface 4),
> "D-Link HSPA+DataCard Debug Port" (interface 5).
> 
> Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
> Cc: stable@vger.kernel.org
> ---
>  drivers/usb/serial/option.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index fe123153b1a5..fa887c6e50e7 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -2023,6 +2023,8 @@ static const struct usb_device_id option_ids[] = {
>  	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x02, 0x01) },
>  	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d03, 0xff, 0x00, 0x00) },
>  	{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7d04, 0xff) },			/* D-Link DWM-158 */
> +	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d0e, 0xff, 0x02, 0x01) },    /* D-Link DWM-157 C1 */
> +	{ USB_DEVICE_AND_INTERFACE_INFO(0x2001, 0x7d0e, 0xff, 0x00, 0x00) },

What is the reason for not using a single USB_DEVICE_INTERFACE_CLASS
here instead?

Do you have access to this device so that you could post the output of
usb-devices (or "lsusb -v")?

>  	{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e19, 0xff),			/* D-Link DWM-221 B1 */
>  	  .driver_info = (kernel_ulong_t)&net_intf4_blacklist },
>  	{ USB_DEVICE_INTERFACE_CLASS(0x2001, 0x7e35, 0xff),			/* D-Link DWM-222 */

Thanks,
Johan