Hi again, Stanislaw, I was meanwhile wondering if we could try and unconditionally drop the DPD calibration from the driver, and see if anyone complains. You said it yourself [1] the vendor driver has DPD calibration under conditional compilation (I don't know which conditions, though, I haven't looked at it). As far as testing is concerned, all my devices are 148f:7601, so it would be nice for people with other USB IDs to test them. [1] https://github.com/kuba-moo/mt7601u/issues/64#issuecomment-479801642 On Wed, 5 May 2021 at 10:25, Stanislaw Gruszka <stf_xl@xxxxx> wrote: > > Yes, those u32 quirks are used to change behaviour of usb-core module > and we should not interfere with them. We need quirk for mt7601u driver. Right, thanks for clarifying. > Ok, please correct the topic of the patch when you'll be posting next > version. Will do. Thanks, Rui