Re: [PATCH v3 2/2] usb: misc: xapea00x: perform platform initialization of TPM

[Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>]

On Sun, May 06, 2018 at 09:02:29AM -0600, Jason Gunthorpe wrote:
> On Fri, May 04, 2018 at 03:19:21PM -0500, David R. Bild wrote:
> > Setting the platform hierarchy password to a random discarded value
> > (and the dictionary lockout reset) is really the only special work
> > done here. The other steps (startup, self test, etc.) are done by the
> > TPM subsystem if needed.
> > 
> > So easy option would be for the TPM subsystem to set the platform
> > hierarchy password to a random value during device registration, if
> > needed.  It could either
> 
> This would probably make more sense, I'm not opposed at least
> 
> > This wouldn't require a significant change to the TPM subsystem
> > internals and would let me drop nearly the entire second patch from
> > this series.  (I think the dictionary lockout reset can be done via
> > the already exported "tpm_send(...)" function.)
> 
> Sounds like a much better approach to me.
> 
> Jason

Yes this part but I have absolutely zero understanding about what was
explained before this part (the *longer* part in the email).

/Jarkko