On Fri, Feb 26, 2021 at 11:39:19AM +0800, Shawn Guo wrote: > Running kernel with ACPI on Lenovo Flex 5G laptop, touchpad is just > not working. That's because the GpioInt number of TSC2 node in ACPI > table is simply wrong, and the number even exceeds the maximum GPIO > lines. As the touchpad works fine with Windows on the same machine, > presumably this is something Windows-ism. Although it's obviously > a specification violation, believe of that Microsoft will fix this in > the near future is not really realistic. > > It adds the support of overriding broken GPIO number in ACPI table > on particular machines, which are matched using DMI info. Such > mechanism for fixing up broken firmware and ACPI table is not uncommon > in kernel. And hopefully it can be useful for other machines that get > broken GPIO number coded in ACPI table. +Cc: Hans. Hans, would appreciate your opinion on this thread. Maybe I'm mistaken in my conclusions. -- With Best Regards, Andy Shevchenko
