Hello! Upgrading Linux from 4.16 to 4.17, a ThinkPad L570 started receiving spurious input events, mostly right mouse button click events, but also cursor jumps. I have not attempted to understand whether these events come from the trackpoint or touchpad or some other driver, but I managed to bisect this issue to commit a986c75a7df0 titled "platform/x86: thinkpad_acpi: Add 2nd Fan Support for Thinkpad P50" by Alexander Kappner. Apparently the quirk mitigation is applied when the BIOS version begins with N1. The BIOS version on the L570 in question is N1XET57W (1.35 ) which is probably why this commit causes the described problems on the ThinkPad L570. How exactly? - I don't know. The issue did not reproduce when running some stable 4.17 and 4.18 kernels with commit a986c75a7df0 reverted. Please fix this for future kernels. Thanks! :) Best regards, Jaak Ristioja
