linux-kernel - Re: [PATCH] tpm_tis: verify locality released before returning from release

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Date:   Mon, 14 May 2018 13:27:13 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Jerry Snitselaar <jsnitsel@...hat.com>
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        Peter Huewe <peterhuewe@....de>, Jason Gunthorpe <jgg@...pe.ca>
Subject: Re: [PATCH] tpm_tis: verify locality released before returning from
 release_locality

On Sat, May 05, 2018 at 12:54:53PM -0700, Jerry Snitselaar wrote:
> For certain tpm chips releasing locality can take long enough that a
> subsequent call to request_locality will see the locality as being
> active when the access register is read in check_locality. So check
> that the locality has been released before returning from
> release_locality.
> 
> Cc: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> Cc: Peter Huewe <peterhuewe@....de>
> Cc: Jason Gunthorpe <jgg@...pe.ca>
> Reported-by: Laurent Bigonville <bigon@...ian.org>
> Signed-off-by: Jerry Snitselaar <jsnitsel@...hat.com>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

/Jarkko