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tpm: vtpm_proxy: Suppress error logging when in closed state 

Suppress the error logging when the core TPM driver sends commands
to the VTPM proxy driver and -EPIPE is returned in case the VTPM
proxy driver is 'closed' (closed anonymous file descriptor).  This
error code is only returned by the send function and by tpm_transmit
when the VTPM proxy driver is being used.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Stefan Berger 2017-05-25 18:29:13 -04:00 committed by Jarkko Sakkinen
parent 5e9fefd26b
commit 402149c647
2 changed files with 4 additions and 3 deletions
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5
drivers/char/tpm/tpm-interface.c
View File

@ -429,8 +429,9 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
rc = chip->ops->send(chip, (u8 *) buf, count);
if (rc < 0) {
dev_err(&chip->dev,
"tpm_transmit: tpm_send: error %d\n", rc);
if (rc != -EPIPE)
dev_err(&chip->dev,
"%s: tpm_send: error %d\n", __func__, rc);
goto out;
}

2
drivers/char/tpm/tpm2-cmd.c
View File

@ -840,7 +840,7 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type)
/* In places where shutdown command is sent there's no much we can do
* except print the error code on a system failure.
*/
if (rc < 0)
if (rc < 0 && rc != -EPIPE)
dev_warn(&chip->dev, "transmit returned %d while stopping the TPM",
rc);
}