linux-kernel - Re: [PATCH] USB: serial: option: add LongSung M5710 module support

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Date:   Mon, 4 Jan 2021 11:32:28 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Daniel Palmer <daniel@...f.com>
Cc:     johan@...nel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: serial: option: add LongSung M5710 module support

On Sun, Dec 27, 2020 at 12:17:16PM +0900, Daniel Palmer wrote:
> Add a vendor id for LongSung and a product id for the M5710 module.
> 
> Signed-off-by: Daniel Palmer <daniel@...f.com>
> ---
>  drivers/usb/serial/option.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
> index 2c21e34235bb..2666e061c38d 100644
> --- a/drivers/usb/serial/option.c
> +++ b/drivers/usb/serial/option.c
> @@ -560,6 +560,9 @@ static void option_instat_callback(struct urb *urb);
>  #define WETELECOM_PRODUCT_6802			0x6802
>  #define WETELECOM_PRODUCT_WMD300		0x6803
>  
> +/* LongSung */
> +#define LONGSUNG_VENDOR_ID			0x2df3
> +#define LONGSUNG_PRODUCT_M5710			0x9d03

I'm trying to move away from adding such defines for new devices as they
do not really add any value so I dropped them from the patch.
  
>  /* Device flags */
>  
> @@ -2060,6 +2063,8 @@ static const struct usb_device_id option_ids[] = {
>  	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) },			/* GosunCn GM500 RNDIS */
>  	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) },			/* GosunCn GM500 MBIM */
>  	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) },			/* GosunCn GM500 ECM/NCM */
> +	/* LongSung devices */
> +	{ USB_DEVICE(LONGSUNG_VENDOR_ID, LONGSUNG_PRODUCT_M5710) },		/* LongSung M5710 */
>  	{ } /* Terminating entry */
>  };
>  MODULE_DEVICE_TABLE(usb, option_ids);

Also, would you mind posting the "lsusb -v" output for this device for
reference? Do you know what each interface is used for?

I've applied this one locally, but I'll await your reply before pushing
it out.

Johan