Hi Loic, > > I remember Frederic had some gpio/irq polarity issues:> > > 5cebdfea32b89911d4540440c1c2854a1a3d591e > > Bluetooth: hci_bcm: Fix IRQ polarity for T100 > > Maybe the ACPI table is not correct on some devices. > > > I had seen that patch indeed. I'm attaching the ACPI table I had shared on > the list a long time ago for the ThinkPad Tablet 8. Is there anything that > looks suspicious in there and that you could link to a similar gpio/irq > polarity issue maybe? > > If you think there is a good chance that this could be the issue as well, > I > will try to build a similar patch for this ThinkPad product and share my > results. Just to let you know, after finding the right DMI values to simply adapt the above patch for my ThinkPad tablet, I can confirm that a quick local kernel modification indeed fixes the issue. I will need a bit more time to propose a proper patch, adding this other impacted tablet instead of replacing the above Asus one, and supporting potentially even more products facing the same polarity issue. Is hard-coding such exceptions / polarity issues manually the only way to go or could there be a way to detect this programmatically instead? Regards, Jérôme -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
