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Date: Wed, 11 Dec 2019 18:18:17 -0800
From: Dan Williams <dan.j.williams@...el.com>
To: Jerry Snitselaar <jsnitsel@...hat.com>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Christian Bundy <christianbundy@...ction.io>,
Peter Huewe <peterhuewe@....de>,
Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
Jason Gunthorpe <jgg@...pe.ca>,
Stefan Berger <stefanb@...ux.vnet.ibm.com>,
stable <stable@...r.kernel.org>, linux-integrity@...r.kernel.org
Subject: Re: [PATCH v2] tpm_tis: reserve chip for duration of tpm_tis_core_init
On Wed, Dec 11, 2019 at 6:15 PM Dan Williams <dan.j.williams@...el.com> wrote:
>
> On Wed, Dec 11, 2019 at 3:56 PM Jerry Snitselaar <jsnitsel@...hat.com> wrote:
> >
> > Instead of repeatedly calling tpm_chip_start/tpm_chip_stop when
> > issuing commands to the tpm during initialization, just reserve the
> > chip after wait_startup, and release it when we are ready to call
> > tpm_chip_register.
> >
> > Cc: Christian Bundy <christianbundy@...ction.io>
> > Cc: Dan Williams <dan.j.williams@...el.com>
> > Cc: Peter Huewe <peterhuewe@....de>
> > Cc: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
> > Cc: Jason Gunthorpe <jgg@...pe.ca>
> > Cc: Stefan Berger <stefanb@...ux.vnet.ibm.com>
> > Cc: stable@...r.kernel.org
> > Cc: linux-integrity@...r.kernel.org
> > Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()")
> > Fixes: 5b359c7c4372 ("tpm_tis_core: Turn on the TPM before probing IRQ's")
>
> Ugh, sorry, I guess this jinxed it. This patch does not address the
> IRQ storm on the platform I reported earlier.
Are the reverts making their way upstream?
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