Re: [PATCH] security/keys/trusted: Allow operation without hardware TPM

[Jarkko Sakkinen]

On Mon, Mar 18, 2019 at 04:45:13PM -0700, Dan Williams wrote:
> Rather than fail initialization of the trusted.ko module, arrange for
> the module to load, but rely on trusted_instantiate() to fail
> trusted-key operations.
> 
> Fixes: 240730437deb ("KEYS: trusted: explicitly use tpm_chip structure...")
> Cc: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
> Cc: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> Cc: James Bottomley <jejb@xxxxxxxxxxxxx>
> Cc: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> Cc: Mimi Zohar <zohar@xxxxxxxxxxxxx>
> Cc: David Howells <dhowells@xxxxxxxxxx>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>

It should check for chip in each function that uses TPM now that
the code does not rely on default chip. Otherwise, the semantics
are kind of inconsistent.

/Jarkko