[PATCH v7 1/5] tpm: rename tpm_chip_find_get() to tpm_find_get_ops()

Stefan Berger
2018-06-26T19:09:42Z

Rename tpm_chip_find_get() to tpm_find_get_ops() to more closely match
the tpm_put_ops() counter part.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
drivers/char/tpm/tpm-chip.c | 9 ++++++---
drivers/char/tpm/tpm-interface.c | 14 +++++++-------
drivers/char/tpm/tpm.h | 2 +-
3 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/char/tpm/tpm-chip.c b/drivers/char/tpm/tpm-chip.c
index 0a62c19937b6..242b716aed5e 100644
--- a/drivers/char/tpm/tpm-chip.c
+++ b/drivers/char/tpm/tpm-chip.c
@@ -81,18 +81,21 @@ void tpm_put_ops(struct tpm_chip *chip)
EXPORT_SYMBOL_GPL(tpm_put_ops);

/**
- * tpm_chip_find_get() - find and reserve a TPM chip
+ * tpm_find_get_ops() - find and reserve a TPM chip
* @chip: a &struct tpm_chip instance, %NULL for the default chip
*
* Finds a TPM chip and reserves its class device and operations. The chip must
- * be released with tpm_chip_put_ops() after use.
+ * be released with tpm_put_ops() after use.
+ * This function is for internal use only. It supports existing TPM callers
+ * by accepting NULL, but those callers should be converted to pass in a chip
+ * directly.
*
* Return:
* A reserved &struct tpm_chip instance.
* %NULL if a chip is not found.
* %NULL if the chip is not available.
*/
-struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip)
+struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip)
{
struct tpm_chip *res = NULL;
int chip_num = 0;
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index c43a9e28995e..b4bb34216050 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -929,7 +929,7 @@ int tpm_is_tpm2(struct tpm_chip *chip)
{
int rc;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;

@@ -953,7 +953,7 @@ int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
{
int rc;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
if (chip->flags & TPM_CHIP_FLAG_TPM2)
@@ -1012,7 +1012,7 @@ int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
u32 count = 0;
int i;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;

@@ -1141,7 +1141,7 @@ int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
{
int rc;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;

@@ -1261,7 +1261,7 @@ int tpm_get_random(struct tpm_chip *chip, u8 *out, size_t max)
if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
return -EINVAL;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;

@@ -1323,7 +1323,7 @@ int tpm_seal_trusted(struct tpm_chip *chip, struct trusted_key_payload *payload,
{
int rc;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
return -ENODEV;

@@ -1351,7 +1351,7 @@ int tpm_unseal_trusted(struct tpm_chip *chip,
{
int rc;

- chip = tpm_chip_find_get(chip);
+ chip = tpm_find_get_ops(chip);
if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
return -ENODEV;

diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 7f2d0f489e9c..c38772474091 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -535,7 +535,7 @@ static inline void tpm_msleep(unsigned int delay_msec)
delay_msec * 1000);
};

-struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip);
+struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);

--
2.17.1