Quoting Mimi Zohar (zo...@linux.vnet.ibm.com):
> For readability, define a tpm_chip_put() wrapper to call module_put().
> Replace existing module_put() calls with the wrapper.
>
> (Change based on trusted/encrypted patchset review by David Howells.)
>
> Signed-off-by: Mimi Zohar <zo...@us.ibm.com>
> Signed-off-by: David Safford <saff...@watson.ibm.com>
> Acked-by: David Howells <dhowe...@redhat.com>
Hard to object to this one :)
Acked-by: Serge E. Hallyn <serge.hal...@canonical.com>
> ---
> drivers/char/tpm/tpm.c | 4 ++--
> drivers/char/tpm/tpm.h | 5 +++++
> 2 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
> index 7c41335..26c09f3 100644
> --- a/drivers/char/tpm/tpm.c
> +++ b/drivers/char/tpm/tpm.c
> @@ -736,7 +736,7 @@ int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf)
> if (chip == NULL)
> return -ENODEV;
> rc = __tpm_pcr_read(chip, pcr_idx, res_buf);
> - module_put(chip->dev->driver->owner);
> + tpm_chip_put(chip);
> return rc;
> }
> EXPORT_SYMBOL_GPL(tpm_pcr_read);
> @@ -775,7 +775,7 @@ int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8
> *hash)
> rc = transmit_cmd(chip, &cmd, EXTEND_PCR_RESULT_SIZE,
> "attempting extend a PCR value");
>
> - module_put(chip->dev->driver->owner);
> + tpm_chip_put(chip);
> return rc;
> }
> EXPORT_SYMBOL_GPL(tpm_pcr_extend);
> diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
> index 792868d..72ddb03 100644
> --- a/drivers/char/tpm/tpm.h
> +++ b/drivers/char/tpm/tpm.h
> @@ -113,6 +113,11 @@ struct tpm_chip {
>
> #define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)
>
> +static inline void tpm_chip_put(struct tpm_chip *chip)
> +{
> + module_put(chip->dev->driver->owner);
> +}
> +
> static inline int tpm_read_index(int base, int index)
> {
> outb(index, base);
> --
> 1.7.2.2
>
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