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Subject[PATCH] tpm: fix parameter order in tpm_getcap()
Date
The parameter order mismatches tpm_transmit_cmd().

Fixes: c659af78eb7b ("tpm: Check size of response before accessing data")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
drivers/char/tpm/tpm-interface.c | 14 +++++++-------
drivers/char/tpm/tpm-sysfs.c | 33 ++++++++++++++++-----------------
drivers/char/tpm/tpm.h | 2 +-
3 files changed, 24 insertions(+), 25 deletions(-)

diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 423938e..bcce061 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -478,7 +478,7 @@ static const struct tpm_input_header tpm_getcap_header = {
};

ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
- const char *desc, size_t min_cap_length)
+ size_t min_cap_length, const char *desc)
{
struct tpm_cmd_t tpm_cmd;
int rc;
@@ -555,8 +555,8 @@ int tpm_get_timeouts(struct tpm_chip *chip)
return 0;
}

- rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL,
- sizeof(cap.timeout));
+ rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
+ sizeof(cap.timeout), NULL);
if (rc == TPM_ERR_INVALID_POSTINIT) {
/* The TPM is not started, we are the first to talk to it.
Execute a startup command. */
@@ -565,8 +565,8 @@ int tpm_get_timeouts(struct tpm_chip *chip)
return rc;

rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap,
- "attempting to determine the timeouts",
- sizeof(cap.timeout));
+ sizeof(cap.timeout),
+ "attempting to determine the timeouts");
}

if (rc) {
@@ -630,8 +630,8 @@ int tpm_get_timeouts(struct tpm_chip *chip)
chip->timeout_d = usecs_to_jiffies(timeout_eff[3]);

rc = tpm_getcap(chip, TPM_CAP_PROP_TIS_DURATION, &cap,
- "attempting to determine the durations",
- sizeof(cap.duration));
+ sizeof(cap.duration),
+ "attempting to determine the durations");
if (rc)
return rc;

diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index 2f596d7..fb9b7fe 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -96,9 +96,8 @@ static ssize_t pcrs_show(struct device *dev, struct device_attribute *attr,
char *str = buf;
struct tpm_chip *chip = to_tpm_chip(dev);

- rc = tpm_getcap(chip, TPM_CAP_PROP_PCR, &cap,
- "attempting to determine the number of PCRS",
- sizeof(cap.num_pcrs));
+ rc = tpm_getcap(chip, TPM_CAP_PROP_PCR, &cap, sizeof(cap.num_pcrs),
+ "attempting to determine the number of PCRS");
if (rc)
return 0;

@@ -123,8 +122,8 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr,
ssize_t rc;

rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
- "attempting to determine the permanent enabled state",
- sizeof(cap.perm_flags));
+ sizeof(cap.perm_flags),
+ "attempting to determine the permanent enabled state");
if (rc)
return 0;

@@ -140,8 +139,8 @@ static ssize_t active_show(struct device *dev, struct device_attribute *attr,
ssize_t rc;

rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_PERM, &cap,
- "attempting to determine the permanent active state",
- sizeof(cap.perm_flags));
+ sizeof(cap.perm_flags),
+ "attempting to determine the permanent active state");
if (rc)
return 0;

@@ -157,8 +156,8 @@ static ssize_t owned_show(struct device *dev, struct device_attribute *attr,
ssize_t rc;

rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_PROP_OWNER, &cap,
- "attempting to determine the owner state",
- sizeof(cap.owned));
+ sizeof(cap.owned),
+ "attempting to determine the owner state");
if (rc)
return 0;

@@ -174,8 +173,8 @@ static ssize_t temp_deactivated_show(struct device *dev,
ssize_t rc;

rc = tpm_getcap(to_tpm_chip(dev), TPM_CAP_FLAG_VOL, &cap,
- "attempting to determine the temporary state",
- sizeof(cap.stclear_flags));
+ sizeof(cap.stclear_flags),
+ "attempting to determine the temporary state");
if (rc)
return 0;

@@ -193,8 +192,8 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
char *str = buf;

rc = tpm_getcap(chip, TPM_CAP_PROP_MANUFACTURER, &cap,
- "attempting to determine the manufacturer",
- sizeof(cap.manufacturer_id));
+ sizeof(cap.manufacturer_id),
+ "attempting to determine the manufacturer");
if (rc)
return 0;
str += sprintf(str, "Manufacturer: 0x%x\n",
@@ -202,8 +201,8 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,

/* Try to get a TPM version 1.2 TPM_CAP_VERSION_INFO */
rc = tpm_getcap(chip, TPM_CAP_VERSION_1_2, &cap,
- "attempting to determine the 1.2 version",
- sizeof(cap.tpm_version_1_2));
+ sizeof(cap.tpm_version_1_2),
+ "attempting to determine the 1.2 version");
if (!rc) {
str += sprintf(str,
"TCG version: %d.%d\nFirmware version: %d.%d\n",
@@ -214,8 +213,8 @@ static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
} else {
/* Otherwise just use TPM_STRUCT_VER */
rc = tpm_getcap(chip, TPM_CAP_VERSION_1_1, &cap,
- "attempting to determine the 1.1 version",
- sizeof(cap.tpm_version));
+ sizeof(cap.tpm_version),
+ "attempting to determine the 1.1 version");
if (rc)
return 0;
str += sprintf(str,
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index bff37be..3f76825 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -499,7 +499,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *buf, size_t bufsiz,
size_t min_rsp_body_len, unsigned int flags,
const char *desc);
ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
- const char *desc, size_t min_cap_length);
+ size_t min_cap_length, const char *desc);
int tpm_get_timeouts(struct tpm_chip *);
int tpm1_auto_startup(struct tpm_chip *chip);
int tpm_do_selftest(struct tpm_chip *chip);
--
2.9.3
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