[PATCH v3 3/5] tpm: migrate tpm2_probe() to use struct tpm_buf
zohar at linux.vnet.ibm.com
Fri Mar 16 12:36:52 UTC 2018
On Fri, 2018-03-16 at 14:21 +0200, Jarkko Sakkinen wrote:
> On Mon, Mar 05, 2018 at 05:52:24PM -0500, Mimi Zohar wrote:
> > Hi Jarrko,
> > On Mon, 2018-03-05 at 18:56 +0200, Jarkko Sakkinen wrote:
> > > In order to make struct tpm_buf the first class object for constructing TPM
> > > commands, migrate tpm2_probe() to use it.
> > >
> > > Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com>
> > With this patch, the Pi doesn't find the TPM. I'm seeing the
> > following line in dmesg.
> > [ 1.087414] tpm_tis_spi: probe of spi0.0 failed with error 256
> Thank you for reporting this Mimi. Does it have TPM1/TPM2?
The pi has a TPM 2.0 attached to the GPIO. James pointed out the
change in return codes.
+ if (be16_to_cpu(out->tag) == TPM2_ST_NO_SESSIONS)
chip->flags |= TPM_CHIP_FLAG_TPM2;
- return 0;
+ return rc;
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