> While this patch is correct, HUION always reuse the same vendor/product > IDs, meaning that it'll affect a fairly big number of devices. Yes, I agree. Not only recent devices are affected, but old devices with new firmware are also affected. [1] shows a firmware update can cause a new device id. It seems that HUION just uses new device id for new firmware, with nothing changed. > Checking some comments in DIGImend's issue tracker [1], users report > that their tablet works applying a similar patch. However, I think that > it could be a good idea if you could build a version of the driver > including your patch and request them to test it. > > I'm pretty sure it'll work, but it might be a good idea to test it on > more devices before merging it. That's sure. I have checked DIGImend's issue before submitting this patch. There is also a pull request to provide the same functionality [2]. And the [2] says at least Gaomon M6 and Gaomon 1060pro worked. issue [3] and [4] seems to show that H580X and H1161 also works. Nowadays I am working on my KD200, which is a typical devices of recent Huion tablets. This tablets has 3 usbif, so it is not fully recognized in the init process of the huion tablets in the kernel. This problem is also present in the 0x006d device (with invalid interface) [5]. I think it's OK to delay this patch and do more test until the invalid interface problem is mitigated or solved. [1] https://github.com/DIGImend/digimend-kernel-drivers/issues/613 [2] https://github.com/DIGImend/digimend-kernel-drivers/pull/623 [3] https://github.com/DIGImend/digimend-kernel-drivers/issues/600 [4] https://github.com/DIGImend/digimend-kernel-drivers/issues/640 [5] https://github.com/DIGImend/digimend-kernel-drivers/issues?q=interface+is+invalid%2C+ignoring
