From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Sahil Rihan <srihan@fb.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Alexei Starovoitov <ast@fb.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Subject: Re: [Regression] TPM char device not created if TPM 1.2 is disabled, but visible
Date: Tue, 06 Mar 2018 13:13:51 +0200 [thread overview]
Message-ID: <1520334831.7549.5.camel@linux.intel.com> (raw)
In-Reply-To: <7A0881B1-6581-4D0B-A4A9-B014F995B338@fb.com>
On Mon, 2018-03-05 at 19:28 +0000, Sahil Rihan wrote:
> Agree on keeping the warning.
>
> I'm guessing you want to return -ENODEV from tpm_bios_log_setup. Doing it from
> tpm_read_log_acpi will just fall through to calling tpm_read_log_of, which I
> think will end up returning -EIO again.
>
> In terms of semantics I'm not sure if -ENODEV is the right return code if the
> BIOS event log is absent. I guess you can claim it's some sort of "device". I
> don’t have a strong opinion here.
>
> Sahil
You are absolutely right. Printing warning and returning zero would be
the right measure to take.
One more cosmetic detail. Should the log level be info or warn? I mean
as far as I'm concerned everything is in a legit state.
/Jarkko
next prev parent reply other threads:[~2018-03-06 11:13 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-03 21:27 [Regression] TPM char device not created if TPM 1.2 is disabled, but visible Sahil Rihan
2018-03-05 12:14 ` Jarkko Sakkinen
2018-03-05 19:28 ` Sahil Rihan
2018-03-06 11:13 ` Jarkko Sakkinen [this message]
2018-03-07 22:34 ` Sahil Rihan
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