Device driver: Driver installation issue ?

[hemanth kumar velooru]

Hello team,

We are trying to create an INF file which can be used to install the base ufxsynopsys inbox driver on Windows IoT. The INF file simply adds the VID and DEV ID of the device controller which is not present in the base INF.

In the INF file, when we add the class and class GUID as shown below as extension class, the driver is not getting installed.

Class = Extension

ClassGuid = {e2f84ce7-8efa-411c-aa69-97454ca4cb57} //Created using visual studio


But when we give the class type and class GUID same as base class, the driver is getting installed properly without any issues

Class = USBFunctionController

ClassGuid = {bbbe8734-08fa-4966-b6a6-4e5ad010cdd7}

Can you please help us on the following queries?

1. Is it OK to create a new INF file and re use the class and class GUID similar as base INF if we need to add only VID and DEV ID of the device controller which is not present in the base INF?
2. Is there any restrictions like if we need to add a VID and DEV ID which is not present in the base INF, then we need to use class as extension and extension GUID in the new INF file?

Thanks nad regards,

Hemanth kumar velooru.

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