I have few questions related to an USB class filtering.
- I shouldn't send URBs from a class filter to a PDO, but why? I mean, if a have the PDO of a USB device, why is not safe to ask for the device descriptor, for example, after the device is started?
- Is a reasonable approach to wait for URBs sent by the system to complete succesfully and then read the information from them? I guess... with lower filter?
- Is there any way to get the descriptors from an (upper or lower) USB class filter?
Thanks in advance,