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SubjectRe: [PATCH] TPM: ACPI/PNP dependency removal
Rajiv Andrade wrote:
> This patch pushes the ACPI dependency into the device driver code
> itself. Now, even without ACPI/PNP enabled, the device can be registered
> using the TIS specified memory space. This will however result in the
> lack of access to the bios event log, being the only implication of such
> ACPI removal.
>
> Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
> Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
> ---
> drivers/char/tpm/Kconfig | 6 ++++--
> drivers/char/tpm/tpm_tis.c | 42 ++++++++++++++++++++++--------------------
> 2 files changed, 26 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
> index f5fc64f..fffc994 100644
> --- a/drivers/char/tpm/Kconfig
> +++ b/drivers/char/tpm/Kconfig
> @@ -17,14 +17,16 @@ menuconfig TCG_TPM
> obtained at: <http://sourceforge.net/projects/trousers>. To
> compile this driver as a module, choose M here; the module
> will be called tpm. If unsure, say N.
> - Note: For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI
> + Notes:
> + 1) For more TPM drivers enable CONFIG_PNP, CONFIG_ACPI
> and CONFIG_PNPACPI.
> + 2) Without ACPI enabled, the bios event log won't be accessible,

s/bios/BIOS/ please

> + which is required to validate the PCR 0-7 values.
>
> if TCG_TPM
>
> config TCG_TIS
> tristate "TPM Interface Specification 1.2 Interface"
> - depends on PNP
> ---help---
> If you have a TPM security chip that is compliant with the
> TCG TIS 1.2 TPM specification say Yes and it will be accessible

Thanks for the update.


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