linux-kernel - RE: [PATCH] acpi: update struct acpi_table

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Date:	Tue, 9 Jun 2015 16:12:52 +0000
From:	"Moore, Robert" <robert.moore@...el.com>
To:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
CC:	"Zheng, Lv" <lv.zheng@...el.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	Len Brown <lenb@...nel.org>,
	"open list:ACPI COMPONENT AR..." <linux-acpi@...r.kernel.org>,
	"open list:ACPI COMPONENT AR..." <devel@...ica.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] acpi: update struct acpi_table_tpm2

Well, you don't have to use it. ACPICA has done this in several other places. Anyway, I'm hesitant to just remove it at this point.


> -----Original Message-----
> From: Jarkko Sakkinen [mailto:jarkko.sakkinen@...ux.intel.com]
> Sent: Tuesday, June 09, 2015 8:43 AM
> To: Moore, Robert
> Cc: Zheng, Lv; Wysocki, Rafael J; Len Brown; open list:ACPI COMPONENT
> AR...; open list:ACPI COMPONENT AR...; open list
> Subject: Re: [PATCH] acpi: update struct acpi_table_tpm2
> 
> On Tue, Jun 09, 2015 at 06:19:19PM +0300, Jarkko Sakkinen wrote:
> > On Tue, Jun 09, 2015 at 02:21:12PM +0000, Moore, Robert wrote:
> > > ACPICA usually defines any "related" data structures, just for user
> > > convenience.
> >
> > If you want to keep it, it's fine for me but we still probably use the
> > internal structure for it in tpm_crb driver (as tpm_tis uses internal
> > structure for CRB).
> 
> Let me open this a little bit. Everytime we want to do some small change
> to control area (lets say TCG adds some flag) we would have to cycle them
> through you.
> 
> And the changes are not coupled with ACPI in any possible way. This is
> only adds more maintenance burden to you and also to us. This structure is
> the main control structure for the CRB driver and will be refined many
> times in the future. There is no any kind of use to its fields outside of
> the CRB driver.
> 
> /Jarkko
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