[PATCH v7] tpm: cmd_ready command can be issued only after granting locality

[Winkler, Tomas]

> 
> On Mon, Mar 05, 2018 at 07:51:28PM +0200, Jarkko Sakkinen wrote:
> > On Mon, Mar 05, 2018 at 01:34:49PM +0200, Tomas Winkler wrote:
> > > The correct sequence is to first request locality and only after
> > > that perform cmd_ready handshake, otherwise the hardware will drop
> > > the subsequent message as from the device point of view the
> > > cmd_ready handshake wasn't performed. Symmetrically locality has to
> > > be relinquished only after going idle handshake has completed, this
> > > requires that go_idle has to poll for the completion and as well
> > > locality relinquish has to poll for completion so it is not
> > > overridden in back to back commands flow.
> > >
> > > Two wrapper functions are added (request_locality
> > > relinquish_locality) to simplify the error handling.
> > >
> > > The issue is only visible on devices that support multiple localities.
> > >
> > > Fixes: 877c57d0d0ca ("tpm_crb: request and relinquish locality 0")
> > > Signed-off-by: Tomas Winkler <tomas.winkler at intel.com>
> >
> > Tested-by: Jarkko Sakkinen <jarkko.sakkine at linux.intel.com>
> > Reviewed-by: Jarkko Sakkinen <jarkko.sakkine at linux.intel.com>
> 
> This commit has been applied.

Appreciated.
Tomas

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