RE: [PATCH v9 04/17] tpm: print tpm2_commit_space() error inside tpm2_commit_space()

Winkler, Tomas
2018-11-19T21:25:43Z

>
> The error logging for tpm2_commit_space() is in a wrong place. This commit
> moves it inside that function.
>
> Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
> Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
> ---
> drivers/char/tpm/tpm-interface.c | 2 --
> drivers/char/tpm/tpm2-space.c | 9 ++++++---
> 2 files changed, 6 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-
> interface.c
> index 64510ed81b46..7ac6ada8428c 100644
> --- a/drivers/char/tpm/tpm-interface.c
> +++ b/drivers/char/tpm/tpm-interface.c
> @@ -277,8 +277,6 @@ static ssize_t tpm_try_transmit(struct tpm_chip
> *chip,
> }
>
> rc = tpm2_commit_space(chip, space, ordinal, buf, &len);
> - if (rc)
> - dev_err(&chip->dev, "tpm2_commit_space: error %d\n", rc);
>
> out:
> /* may fail but do not override previous error value in rc */ diff --git
> a/drivers/char/tpm/tpm2-space.c b/drivers/char/tpm/tpm2-space.c index
> 1131a8e7b79b..5ecc73988f7c 100644
> --- a/drivers/char/tpm/tpm2-space.c
> +++ b/drivers/char/tpm/tpm2-space.c
> @@ -501,19 +501,19 @@ int tpm2_commit_space(struct tpm_chip *chip,
> struct tpm_space *space,
> rc = tpm2_map_response_header(chip, cc, buf, *bufsiz);
> if (rc) {
> tpm2_flush_space(chip);
> - return rc;
> + goto out;
> }
>
> rc = tpm2_map_response_body(chip, cc, buf, *bufsiz);
> if (rc) {
> tpm2_flush_space(chip);
> - return rc;
> + goto out;
> }
>
> rc = tpm2_save_space(chip);
> if (rc) {
> tpm2_flush_space(chip);
> - return rc;
> + goto out;
> }
>
> *bufsiz = be32_to_cpu(header->length); @@ -526,4 +526,7 @@ int
> tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space,
> memcpy(space->session_buf, chip->work_space.session_buf,
> PAGE_SIZE);
>
> return 0;
> +out:
Maybe 'out' is too positive name for an error-only exit point?
or you can use if (rc) ... dev_err()
> + dev_err(&chip->dev, "%s: error %d\n", __func__, rc);
> + return rc;
> }
> --
> 2.19.1