From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Jerry Snitselaar <jsnitsel@redhat.com>
Cc: linux-integrity@vger.kernel.org, Peter Huewe <peterhuewe@gmx.de>,
Jason Gunthorpe <jgg@ziepe.ca>,
linux-kernel@vger.kernel.org, linux-stable@vger.kernel.org,
Christian Bundy <christianbundy@fraction.io>
Subject: Re: [PATCH] tpm_tis: turn on TPM before calling tpm_get_timeouts
Date: Tue, 12 Nov 2019 22:03:40 +0200 [thread overview]
Message-ID: <20191112200328.GA11213@linux.intel.com> (raw)
In-Reply-To: <20191111233418.17676-1-jsnitsel@redhat.com>
On Mon, Nov 11, 2019 at 04:34:18PM -0700, Jerry Snitselaar wrote:
> With power gating moved out of the tpm_transmit code we need
> to power on the TPM prior to calling tpm_get_timeouts.
>
> Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
> Cc: Peter Huewe <peterhuewe@gmx.de>
> Cc: Jason Gunthorpe <jgg@ziepe.ca>
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-stable@vger.kernel.org
> Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()")
> Reported-by: Christian Bundy <christianbundy@fraction.io>
> Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
> ---
> drivers/char/tpm/tpm_tis_core.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
> index 270f43acbb77..cb101cec8f8b 100644
> --- a/drivers/char/tpm/tpm_tis_core.c
> +++ b/drivers/char/tpm/tpm_tis_core.c
> @@ -974,13 +974,14 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
> * to make sure it works. May as well use that command to set the
> * proper timeouts for the driver.
> */
> + tpm_chip_start(chip);
> if (tpm_get_timeouts(chip)) {
> dev_err(dev, "Could not get TPM timeouts and durations\n");
> rc = -ENODEV;
> + tpm_stop_chip(chip);
> goto out_err;
> }
Couldn't this call just be removed?
/Jarkko
next prev parent reply other threads:[~2019-11-12 20:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-11 23:34 [PATCH] tpm_tis: turn on TPM before calling tpm_get_timeouts Jerry Snitselaar
2019-11-12 0:03 ` [PATCH v2] " Jerry Snitselaar
2019-11-12 20:03 ` Jarkko Sakkinen [this message]
2019-11-12 20:23 ` [PATCH] " Jerry Snitselaar
2019-11-12 20:26 ` Jason Gunthorpe
2019-11-12 20:28 ` Jerry Snitselaar
2019-11-12 20:31 ` Jerry Snitselaar
2019-11-12 20:46 ` Jason Gunthorpe
2019-11-12 21:14 ` Jerry Snitselaar
2019-11-14 16:55 ` Jarkko Sakkinen
2019-11-14 16:56 ` Jason Gunthorpe
2019-11-15 17:43 ` Jarkko Sakkinen
2019-11-15 18:36 ` Jason Gunthorpe
2019-11-15 22:40 ` Jarkko Sakkinen
2019-11-14 16:49 ` Jarkko Sakkinen
2019-11-14 16:51 ` Jason Gunthorpe
2019-11-13 0:02 ` [PATCH v3] " Jerry Snitselaar
2019-11-14 16:59 ` Jarkko Sakkinen
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