On Wed, Jun 24, 2020 at 11:21:50PM -0700, Jerry Snitselaar wrote:
> On Thu Jun 25 20, Jarkko Sakkinen wrote:
> > Acer C720 running Linux v5.3 reports this in klog:
> >
> > tpm_tis: 1.2 TPM (device-id 0xB, rev-id 16)
> > tpm tpm0: tpm_try_transmit: send(): error -5
> > tpm tpm0: A TPM error (-5) occurred attempting to determine the timeouts
> > tpm_tis tpm_tis: Could not get TPM timeouts and durations
> > tpm_tis 00:08: 1.2 TPM (device-id 0xB, rev-id 16)
> > tpm tpm0: tpm_try_transmit: send(): error -5
> > tpm tpm0: A TPM error (-5) occurred attempting to determine the timeouts
> > tpm_tis 00:08: Could not get TPM timeouts and durations
> > ima: No TPM chip found, activating TPM-bypass!
> > tpm_inf_pnp 00:08: Found TPM with ID IFX0102
> >
> > % git --no-pager grep IFX0102 drivers/char/tpm
> > drivers/char/tpm/tpm_infineon.c: {"IFX0102", 0},
> > drivers/char/tpm/tpm_tis.c: {"IFX0102", 0}, /* Infineon */
> >
> > Obviously IFX0102 was added to the HID table for the TCG TIS driver by
> > mistake.
> >
> > Fixes: 93e1b7d42e1e ("[PATCH] tpm: add HID module parameter")
> > Link: https://bugzilla.kernel.org/show_bug.cgi?id=203877
> > Cc: Kylene Jo Hall <kjhall@xxxxxxxxxx>
> > Reported-by: Ferry Toth: <ferry.toth@xxxxxxxxxxxx>
> > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
>
> Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>
Bugzilla has an example of similar behavior with v4.15. I'll apply this
asap.
/Jarkko
