Dan Williams <dcbw@xxxxxxxxxx> writes: > The fact that the firmware implementation has the ability to change the > endpoints is unrelated to Kristian's case, and that alone is > justification for this to be quirked in the driver. People other than > Kristian will undoubtedly use the functionality, on platforms less > limited. FWIW, I agree with Dan and Kristian on this. It's a documented feature, and it will be used. The reasons are irrelevant. The firmware implementation is inconvenient, but we should still strive to make it Just Work in Linux. Kristian's solution does that. > Also most Huawei modems have the ability to change their layout and > configuration just like the EP06 via the U2DIAG and SETPORT commands. Yes, but they are nice enough to use unique class/subclass/protocol triplets for their functions so it's easy to support the changing layout. At least as long as they use their own VID and not some laptop vendor's.. The Sierra Wireless strategy, using fixed interface numbers leaving "holes" is another fine solution to the problem. Or they could have allocated unique VIDs per function combination, as long as the number of valid combinations are low. But they didn't. It's not like it's the first bad firmware design we've had to deal with. Let's just work around it, like we always do. No need to make life difficult for end users just because Quectel makes life difficult for us. Bjørn
