On Fri, Aug 22, 2014 at 12:58:41AM +0000, Scot Doyle wrote: > Some machines, such as the Acer C720 and Toshiba CB35, have TPMs > that do not use interrupts while also having an ACPI TPM entry
How do these machines work in Windows? Why only resume? Shouldn't every TPM command (such as the 3 or 4 the driver issues at startup) timeout too? > indicating a specific interrupt to be used. Since this interrupt > is invalid, these machines freeze on resume until the interrupt > times out. > Generate the ACPI-specified interrupt. If none is received, then > fall back to polling mode. So, this makes the IRQ detection code run unconditionally, but that code was only ever really used in certain old non-probable case.. I wonder if it works reliably? In any event, I think a FIRMWARE_BUG message should be printed if this case is detected. I'd be more comfortable with some kind of ACPI black list or patch or something? What is normal for handling broken ACPI? Jason -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
