From: Tomas Winkler <tomas.winkler@intel.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Jason Gunthorpe <jgg@ziepe.ca>
Cc: Nayna Jain <nayna@linux.vnet.ibm.com>,
Alexander Usyskin <alexander.usyskin@intel.com>,
Tadeusz Struk <tadeusz.struk@intel.com>,
linux-integrity@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org,
Tomas Winkler <tomas.winkler@intel.com>
Subject: [PATCH] tpm: tpm_try_transmit() ignore value of go_to_idle()
Date: Mon, 15 Oct 2018 14:14:34 +0300 [thread overview]
Message-ID: <20181015111434.7777-1-tomas.winkler@intel.com> (raw)
Ignore the return value of go_to_idle() in tpm_try_transmit().
Once it may shadow the return value of actual tpm operation,
second the consequent command will fail as well and the error
will be caought anyway.
Last fix wrong goto, that jumped back instead of forward.
Fixes: 627448e85c76 ("tpm: separate cmd_ready/go_idle from runtime_pm")
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/char/tpm/tpm-interface.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 129f640424b7..f69c711bf74a 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -547,9 +547,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
dev_err(&chip->dev, "tpm2_commit_space: error %d\n", rc);
out:
- rc = tpm_go_idle(chip, flags);
- if (rc)
- goto out;
+ (void)tpm_go_idle(chip, flags);
if (need_locality)
tpm_relinquish_locality(chip, flags);
--
2.14.4
next reply other threads:[~2018-10-15 11:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-15 11:14 Tomas Winkler [this message]
2018-10-16 5:41 ` [PATCH] tpm: tpm_try_transmit() ignore value of go_to_idle() Jason Gunthorpe
2018-10-16 6:20 ` Winkler, Tomas
2018-10-17 23:01 ` Jarkko Sakkinen
2018-10-17 23:08 ` Winkler, Tomas
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