Re: [PATCH 5/6] tpm_tis: convert from pnp_driver to acpi_driver

From: Alan Cox
Date: Wed Jul 01 2009 - 06:01:33 EST


On Tue, 30 Jun 2009 18:04:14 -0700
Andy Isaacson <adi@xxxxxxxxxx> wrote:

> Not all TIS-compatible TPM chips have a _HID method in their ACPI entry,
> and the TPM spec says that the _CID method should be used to enumerate
> the TPM chip.

There are a number of systems with TPMs (older laptops) that don't work
very well if you enable ACPI.

This is therefore a regression - NAK

Probably the best thing to do is to provide both ACPI and PnP
registration according to what is configured into the kernel. (And I
guess spot duplicates although the resource should be busy anyway)
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