Re: [tpmdd-devel] [backport v4.9] tpm_tis: use default timeout value if chip reports it as zero

[Paul Menzel]

Dear Greg,


On 2017-04-15 22:50, Greg KH wrote:
> On Sat, Apr 15, 2017 at 06:26:22PM +0300, Jarkko Sakkinen wrote:
> > From: "Maciej S. Szmigiero" <mail@xxxxxxxxxxxxxxxxxxxxx>
> >
> > Since commit 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for
> > TPM access") Atmel 3203 TPM on ThinkPad X61S (TPM firmware version 
> > 13.9)
> > no longer works.  The initialization proceeds fine until we get and
> > start using chip-reported timeouts - and the chip reports C and D
> > timeouts of zero.
> >
> > It turns out that until commit 8e54caf407b98e ("tpm: Provide a generic
> > means to override the chip returned timeouts") we had actually let
> > default timeout values remain in this case, so let's bring back this
> > behavior to make chips like Atmel 3203 work again.
> >
> > Use a common code that was introduced by that commit so a warning is
> > printed in this case and /sys/class/tpm/tpm*/timeouts correctly says 
> > the
> > timeouts aren't chip-original.
> >
> > Fixes: 1107d065fdf1 ("tpm_tis: Introduce intermediate layer for TPM 
> > access")
> > Cc: stable@xxxxxxxxxxxxxxx
> > Signed-off-by: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx>
> > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
> > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
>
> What is the git commit id for this patch in Linus's tree?

The git commit hash is 1d70fe9d9c3a4c627f9757cbba5d628687b121c1.


Kind regards,

Paul