Re: [tpmdd-devel] TPM drivers support and Linux Integrity Modulefor 2.6.30

[Jonathan M. McCune]

I've seen this in Thinkpad T400 and X301 as well.

-Jon


Rajiv Andrade wrote:
> On Tue, 2009-06-16 at 16:49 -0400, Eric Paris wrote:
>   
> > On Mon, 2009-06-15 at 18:42 -0300, Rajiv Andrade wrote:
> >     
> > > > 2- Forget manufacturer_id and base the decision on the PNP_ID as david
> > > > suggested. I previously considered it but since it would end up in
> > > > modifying tpm_tis_init() prototype (struct device * to struct pnp_dev *)
> > > > and then wouldn't work when loading as a module with force option on, so
> > > > I moved to the manufacturer_id approach.
> > > >
> > > > I'll get back to #2 meanwhile and post the patch, seems not hard to
> > > > accomplish though..
> > > >   
> > > >         
> > > Yes, it wasn't hard, at all, just get the id with to_pnp_dev(dev)->id.
> > >
> > > However, the chip is buggy, there's no reason to make a compliant
> > > upstream code modify its behavior just due an 'exception' for a not
> > > compliant hardware.
> > > No need to worry about it too though, the workaround is available as I
> > > pointed earlier (Seiji's)...
> > >       
> > Wait what?  we refuse to work around buggy hardware that is shipping in
> > LOTS of hardware (all the currently shipping lenovo thinkpads) even
> > though the fix is easy?  This doesn't sound right.....
> >     
>
> I didn't refuse to work on it... That depends on the meaning in this
> context. My point is: not make an exception in the upstream code due a
> buggy hardware (that's what that easy 'fix' does). Other than David's
> patches, there is a workaround available as I said: 
>
> http://sourceforge.net/mailarchive/message.php?msg_name=f02dbbe70812012308n32dc9fd6hd1f04d3ef6e002b7%40mail.gmail.com 
>
> The only Lenovo thinkpad model I know that has it is the X200. If Intel
> is indeed still shipping it buggy (therefore more and more unaware users
> are buying it), that's another story. Can you confirm that?
> The best would be to hear something from Intel, if they are planning to
> fix it, discontinue it, do nothing about it or anything else.
> Do you know how to do it or if that's possible?
>
> More, that's only one bug. With the workaround in hands and being able
> to load the module, did you run any regression tests? (Sorry for asking
> that, but, again, I don't have this chip):
>
> Thanks,
> Rajiv
>
>
>
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