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From:   Dan Williams <dan.j.williams@intel.com>
Date:   Thu, 2 Jan 2020 21:04:57 -0800
Message-ID: <CAPcyv4gPEu+D+hRqG4HOU24+6xGpZsOb4Po8V+asvvFU-hk6ng@mail.gmail.com>
Subject: Re: Patch "tpm_tis: reserve chip for duration of tpm_tis_core_init"
 has been added to the 5.4-stable tree
To:     Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc:     Christian Bundy <christianbundy@fraction.io>,
        Greg KH <gregkh@linuxfoundation.org>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        Peter Huewe <peterhuewe@gmx.de>,
        Stefan Berger <stefanb@linux.vnet.ibm.com>,
        stable-commits@vger.kernel.org, linux-integrity@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Thu, Jan 2, 2020 at 11:20 AM Dan Williams <dan.j.williams@intel.com> wrote:
>
> On Thu, Jan 2, 2020 at 9:21 AM Jarkko Sakkinen
> <jarkko.sakkinen@linux.intel.com> wrote:
> >
> > On Tue, Dec 31, 2019 at 11:47:37AM -0800, Christian Bundy wrote:
> > > > Christian, were you having any issues with interrupts? You system was going
> > > > into this code as well.
> > >
> > > Unfortunately I'm now unable to test, sorry for the trouble. I replaced my BIOS
> > > with UEFI firmware and the problem has disappeared. Please let me know if there
> > > is anything else I can do to help.
> > >
> > > Christian
> >
> > Takashi wrote yesterday [*]:
> >
> > "I'm building a test kernel package based on 5.5-rc4 with Jarkko's revert
> > patches"
>
> Nice, I also built one of those. Just waiting for access to the system
> again to gather results.

Ok, it looks good.

Tested-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Xiaoping Zhou <xiaoping.zhou@intel.com>

It does report:

[    2.546660] tpm_tis IFX0740:00: 2.0 TPM (device-id 0x1B, rev-id 16)
[    2.546823] tpm tpm0: tpm_try_transmit: send(): error -5
[    2.546824] tpm tpm0: [Firmware Bug]: TPM interrupt not working,
polling instead

...at boot, but tpm2_nvlist works ok.