Re: [PATCH] USB: cdc-acm: Add support for second ACM channel on more Nokia phones

[Oliver Neukum]

Hi,

On 03.04.26 15:20, Рыжов Фёдор wrote:

> Nokia phones have two kinds of model names: "commercial" (for example, "X3-02") and "type identifier" (my X3-02 is "RM-639"). There are cases when different phones (with different RM codes) were released under one commercial name. They look and work very similarly, but may have difference in memory amount, radio bands, SIM operator lock, region-specific SARs, etc. For example, T-Mobile branded Lumia 710 is "RM-809", but "global version" has code "RM-803".
>
> Different RM-models have different incompatible firmwares. They also have different USB PIDs. That's why there are multiple lines with same model name.

Thank you for this response. This is important information. Hence I'd
like to request that you add a general comment to the driver with your patch
giving exactly this explanation for device appearing twice. Right in front
of the declaration would be best. We really should make sure we do not
lose such information.

	Regards
		Oliver